Answer:
30
Step-by-step explanation:
So, im doing it in fractions
First we have to convert:
4.2= 4 2/10= 4 1/5
0.14=14/100
Then make fractions( if needed)
21/5÷14/100
21/5x100/24=2100/70=210/7=30
35.6 355⅝5555555555555555555545455555555
Answer: 2 X 2 X 3 X 3 X 5
Step-by-step explanation: please see attachment for explanation
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➷ The formula for surface area of a cylinder is:
![2\pi rh + 2\pi r^2](https://tex.z-dn.net/?f=2%5Cpi%20rh%20%2B%202%5Cpi%20r%5E2)
The radius is half the diameter
radius = 40/2 = 20
Substitute the values in
Surface area = ![2\pi (20)(32) + 2\pi (20)^2](https://tex.z-dn.net/?f=2%5Cpi%20%2820%29%2832%29%20%2B%202%5Cpi%20%2820%29%5E2)
Simplify to get an answer of:
surface area = ![2080\pi feet^2](https://tex.z-dn.net/?f=2080%5Cpi%20feet%5E2)
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➶ Hope This Helps You!
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