Work out the surface area of this cylinder.
8 cm
16.8 cm
please give me the working out aswell not just a number
Answers
Step-by-step explanation:
First, you'd get the area of the circle, then multiply it by two (there's two ends to a cylinder)
so (pi)(R^2)
If 8 is the diameter, then 4 is the radius (r=1/2d)
3.14{pi}*16{4 squared}+=50.27
(50.27*2)= 100.54
Now, we need to find the area of the side of the cylinder. We have the given height of 16.8, and now we need to find the length. In order to do that, we must find the perimeter/diameter of the circle with the formula of Pi*Diameter.
if the diameter of the circle is 8, then 3.14*8=25.12.
25.12*16.8=422.016
now we need to add the area of the circles to get total surface area.
100.54+422.016= 522.556cm^2
I hope this helps!
The surface area of the given cylinder is 522.496 cm².
What is Cylinder?A cylinder is a three dimensional figure which is formed by two parallel circular bases joined by a curved surface.
Center of the two bases is joined by a line called the axis of the cylinder.
Total surface area of cylinder can be found by the total of area of circular bases and the area of curved surface.
Total surface area = Area of Circular bases + Area of curved surface
= 2π r² + 2π r h
where r is the radius of the circular base and h is the height of the cylinder. π is the pi constant with value 3.14
Here, r = 8/2 = 4 cm and h = 16.8 cm
Total surface area = 2πr (r + h)
= 2π × 4 (4 + 16.8)
= 8π × 20.8
= 166.4π
= 166.4 × 3.14
= 522.496
Hence the surface area of the cylinder is 522.496 cm².
To learn more about Cylinder, click on the link :
https://brainly.com/question/27853279
#SPJ2
Related Questions
The skating rink charges 0.75 to rent skates and 1.25 per hour to take which equation can be used to find the number of hours (h) someone skated if he or she was charged 4.50
A) h(0.75+1.25)=4.50
B) 0.75+1.25=4.50
C) 0.75+1.25h=4.50
D) 0.75h+1.25=4.50
Answers
Answer: C
Step-by-step explanation:
Carlita reads a story about a young boy who is constantly causing problems. Everywhere he goes, he causes trouble in one form or another while serving as a warning of how not to behave. His escapades share an important message but are funny at the same time. Which traditional character does this boy draw on? A a witch B a trickster C an unlikely hero D a god or goddess
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Answer:
The answer is: B a trickster
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Can someone tell me what number 9 is yes or no
Answers
Answer:
it´s no
Step-by-step explanation:
Answer:
no
Step-by-step explanation:
What is the square root of 125 in simplified radical form?
Answers
Answer:
Simplified radical form: 5√5
Answer:
[tex]5\sqrt{5}[/tex]
Step-by-step explanation:
[tex]\sqrt{ab} =\sqrt{a}\cdot\sqrt{b}[/tex]
Therefore,
[tex]\sqrt{125} =\sqrt{25}\cdot \sqrt{5}=\fbox{$5\sqrt{5}$}[/tex].
do the ratios 8/16 and 2/4 form a proportion
Answers
Answer:
Step-by-step explanation:
8/16=8:16
2/4=2:4
Answer:
Yes, the ratios 2/4 and 8/16 form a proportion. To check if two ratios form a proportion, you can cross-multiply and see if the products are equal. In this case, 2 x 16 = 4 x 8 = 32, so the products are equal. Therefore, the ratios form a proportion.
what does is the c ? c + 13 = -17
Answers
Step-by-step explanation:
c + 13 = - 17
c = - 17 - 13
Therefore c = -30
Hope it will help :)
Answer:
c is equal to negative thirty.
Step-by-step explanation:
You can find out what c is by subtracting 13 from both sides of the equation:
c + 13 = -17
c + 13 - 13 = -17 - 13
c + 0 = -30
c = -30
Please help me answer this.
Answers
Answer:
D. 4,-1
Step-by-step explanation:
The mathmatical way to solev it is to find the linear equation and plug in the points, but i just looked at the graph to see which point was in the shaded region.
removing this account, any words
Answers
Answer: Cya
Step-by-step explanation:
Answer:
Thanks for the free points. Sayonara, mate.
Step-by-step explanation:
A cell phone company charges a flat rate of $4.75 per month, with an additional charge of $0.19 per minute. How many minutes did Alexandra talk on her cell phone if her monthly bill was $27.55?
Answers
help pls to get pinned
Answers
Answer:
[tex]\frac{15}{10}[/tex] and [tex]\frac{3}{10}[/tex]
[tex]\frac{15}{10} -\frac{12}{10} = \frac{3}{10}[/tex]
Step-by-step explanation:
Given
[tex]\frac{3}{2} - \frac{6}{5}[/tex]
Now the L.C.M = 10
= [tex]\frac{15-12}{10}[/tex]
= [tex]\frac{15}{10} -\frac{12}{10} = \frac{3}{10}[/tex]
15(n−10)=6−312 what is n
Answers
Answer:
ATQ= 15 is 1/5 and 312 is 3/12 sorry for that
1/5(N-10)=6-3/12
1/5N -2= 6/1 - 3/12
1/5N-2 = 72 -3/12 = 69/12
69/2 = 5.75
1/5N = 5.75-2 = 3.75
N= 3.75/.2
18.75
Step-by-step explanation:
NUMBER 2 IM RUSHING. ILL GIVE BRAINLIEST TO WHOEVER GETS IT RIGHT I PROMISE
Answers
=10.99
Is it linear or nonlinear
Answers
Answer:linear
Step-by-step explanation:
the line is going straight
Show that the two shorter sides in triangle A have the same length as the two shorter sides in triangle B
Answers
Answer:
Step-by-step explanation:
a). Let the unknown side of triangle A = x cm
And unknown side of triangle B = y cm
By applying Pythagoras theorem in triangle A,
13² = 12² + x²
x² = 169 - 144
x² = 25 ⇒ x = 5 cm
By applying Pythagoras theorem in triangle B,
y² = 5² + 12²
y² = 25 + 144
y = √169
y = 13 cm
Therefore, smaller sides of these triangles measure 5 cm and 12 cm and they are same in measure.
b). Since, corresponding sides of both the triangles are congruent,
By SSS property of congruence, both the triangles will be congruent.
How do i graph 2x + 3y = 9
Answers
you can do this by finding the value for y:
2x+3y=9 —-> move 2x to the other side
3y = -2x + 9 —> then divide both sides by 3
y = -⅔x + 3 <— this is your y-intercept
to graph this, start from the point (0,0)
your first point will be the constant which in this case is number 3
so plot this 3 on your y- axis on your grid
from there, your term in the equation which in this case is -⅔x
from your first point which is (0,3) you either:
go up two times, go left three times
or
go down two times, go right three times
Coefficient of x in -9 x y2z is
a) 9yz b) -9yz c) 9y2z d) -9y2z
please say the right answer
Answers
Given:
The expression is
[tex]-9xy^2z[/tex]
To find:
The coefficient of x in the given expression.
Solution:
Coefficient of a variable is the product of a number and other variables multiplying the variable in an algebraic expression.
In the given expression the number and variables other than x are -9, y² and z.
So, coefficient of x is
[tex]-9\times y^2\times z=-9y^2z[/tex]
Therefore, the correct option is (d).
Simplify the following
A)
[tex] \sqrt{ \frac{9}{25} } [/tex]
B)
[tex] \frac{ \sqrt{12} }{ \sqrt{3} } [/tex]
Cl
[tex] \frac{ \sqrt{15} }{ \sqrt{3} } [/tex]
WILL MARK AS BRAINLIEST ANSWER
Answers
Answer:
see the answers ⤵️Step-by-step explanation:
to understand the solving stepsyou need to know about[tex] \sqrt{ \frac{x}{y} } < = > \frac{ \sqrt{x} }{ \sqrt{y} } \\ and \: \\ \sqrt{x} \times \sqrt{y} = \sqrt{xy} [/tex]PEMDASlet's solve:
[tex]a) \sqrt{ \frac{9}{25} } [/tex]
[tex] \frac{ \sqrt{9} }{ \sqrt{25} } [/tex]
[tex] \frac{3}{5} [/tex]
[tex]b) \frac{ \sqrt{12} }{ \sqrt{3} } [/tex]
[tex] \frac{ \sqrt{12} }{ \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} } [/tex]
[tex] \frac{ \sqrt{12 \times 3} }{ (\sqrt{3} )^{2} } [/tex]
[tex] \frac{ \sqrt{36} }{3} [/tex]
[tex] \frac{6}{3} [/tex]
[tex]2[/tex]
[tex]c) \frac{ \sqrt{15} }{ \sqrt{3} } [/tex]
[tex] \sqrt{5} [/tex]
HELP ASAP PLEASE!
A cashier rings up 7 customers. Oddly enough, each
customer buys the same items. They each buy 4
books that cost x dollars each. They also each have a
$5 off coupon.
1. Write an expression that shows how much the 7
customers paid.
2. Simplify the expression.
Answers
Answer:
Hope this is right.
1. 7(4x-5)
2. 28x-35
Step-by-step explanation:
the total of three consecutive numbers is 210. what are the numbers. show all work
Answers
Let n = the first of three consecutive numbers.
Let n + 1 = the second consecutive number, and ...
Let n + 2 = the third consecutive number.
Since we're given that: "the sum of three consecutive numbers is 210," then we can now translate this statement mathematically into the following equation to be solved for the unknown number n:
n + (n + 1) + (n + 2) = 210
n + n + 1 + n + 2 = 210
Collecting like-terms on the left, we get:
3n + 3 = 210
3n + 3 - 3 = 210 - 3
3n + 0 = 207
3n = 207
(3n)/3 = 207/3
(3/3)n = 207/3
(1)n = 69
n = 69
Therefore, ,...
n + 1 = 69 + 1 = 70 and
n + 2 = 69 + 2 = 71
CHECK:
n + (n + 1) + (n + 2) = 210
69 + (70) + (71) = 210
69 + 70 + 71 = 210
210 = 210
Therefore, the three consecutive numbers whose sum is 210 are indeed 69, 70, and 71, and 71 is obviously the largest of these three numbers
A rectangle has a length of x + 2, a width of 7, and a perimeter of 32.
The value of x is
Answers
Answer:
x=7
Step-by-step explanation:
You should first write an equasion to represent the question.
There are 2 ways you can write this → x+2+x+2+7+7 or 2(x+2)+2(7)
Then Simplify = To check the answer plug the answer back in ->14+4+14=32
2x+4+14=32
2x+18=32
2x=(32-18)
2x=14
x=7
7(2x + 8) = 84 What could be the reason for the first step in solving this equality ?
Answers
Answer:
first you must multiply the 7 by what is inside the parentheses:
14x + 56 = 84
Can you help order the numbers from least to greatest?
Answers
Answer:
1, 4, 3, 2 (from left to right)
Step-by-step explanation:
The order is 1, 4, 3, 2. Hope this helps :)
what is 6/5 of 7003=
PLEASE HELP AGAIIIN!!!!!!!!!
Answers
Answer:
8,403.6
Step-by-step explanation:
6/5 of 7003
= 6/5 × 7003
= 42,018/5
= 8,403.6
Hence 6/5 of 7003 is 8,403.6
Enter the value of x that makes the given equation true.
3(5 - x) = 7x - 2
Answers
Answer:
exact form: x=17/10
Decimal form: x=1.7
mixed number form: 1 7/10
Answer:
x = 17/10 (as a fraction) or x = 1.7(as a decimal) or x = 1 7/10(as a mixed number)
Step-by-step explanation:
3(5-x) = 7x - 2
3 * 5 - 3* x = 7x - 2 (brackets means multiply)
15 - 3x = 7x - 2 (when over equal sign negative changed to positive)
15 + 2 = 7x + 3x
17/10 = 10x/10 (cross-cancel cuz u tryna isolate the x)
17/10 = x
Jojo has 12 ounces of milk with 4% fat in her sippy cup. She spills some on the floor . Her mother adds 6 ounces of milk with 2% fat in her sippy cup. She now has 10 ounces of milk in the cup . What is the concentration of her milk now?
Answers
Answer:
7%
Step-by-step explanation:
Answer:
7%
Step-by-step explanation:
please help really important for my grade :(
Answers
Answer:
≈ 50.7 cm²
Step-by-step explanation:
The area (A) of Δ XYZ is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height ), that is
A = [tex]\frac{1}{2}[/tex] × XY × YZ
Calculate YZ using the tangent ratio in the right triangle
tan40° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{YZ}{XY}[/tex] = [tex]\frac{x}{11}[/tex] ( multiply both sides by 11 )
11 × tan40° = x , that is
YZ ≈ 9.23 cm
Thus
A = [tex]\frac{1}{2}[/tex] × 11 × 9.23 = 5.5 × 9.23 ≈ 50.7 cm² ( to 3 significant figures )
BRAINLIEST. PLEASE ANSWER
Answers
Answer:
a). Distance round one loop = 141.37 meters
b). Distance covered = 3534.29 meters
Step-by-step explanation:
Diameter of the given track = 45 meters
a). Distance round one loop of the track = circumference of the circle
Circumference of a circle = π × (Diameter)
= π × (45)
= 141.37 meters
b). Distance covered by going around the track 25 times = 25 × distance in one loop of the track
= 25 × 141.37
= 3534.29 meters
Given f(x) = 2x + 2, solve for x when f(x) = -4
Anyone know the answer?
Answers
A tile expert is creating a design for a bathroom floor. He needs 6-sided
tiles and 3-sided tiles. Which two polygons does he use?*
Answers
Answer:
hexagons and triangles
JJ has two dogs. The combined weight of the two dogs is 60lbs. The larger
dog is twice the weight of the smaller dog.
Answers
Answer:
The larger dog weighs 40 pounds and the smaller dog weighs 20 pounds
Step-by-step explanation: