They give the formula as:
Surface Area =<span> (2 • <span>π <span>• r²) + (2 • <span>π • r • height)</span></span></span></span>
However the 2*PI*r^2 part of the formula is used to calculate the 2 "ends" of a cylinder. Since the problem states that you are NOT to count any of surface area of the "ends" then you only need the <span>(2 • <span>π • r • height) part of the formula.
So, r = 3 inches and height = 8 * 3 inches, the side area equals
2 * PI * r * height
2 * 3.14159 * 3 * 24 =
</span></span>
<span>
<span>
<span>
452.39 cubic inches which is the lateral area.</span></span></span>
(4x28)+64
112+64
176
Rounded to the nearest ten it would be 180
We have an equation: 20/?= 150/240
Cross multiply:
150*?= 20*240
⇒ ?= 20*240/150= 32
The final answer is 32 minutes~
Answer:
The answer is 13! which equals 6227020800.
