surface area of a cylinder = (πr²)h
radius = diameter/2 = 10/2 = 5
surface area = 690.8
690.8 = (π(5)²)h
690.8 = 25πh
h = 8.80 in
answer: 8.80 in
Answer:
b part is the answer
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The correct answer would be A. 21.5
a^2 + b^2 = c^2
so....
100 + 361 = c^2
The square root of 461 is 21.4709106 but you would round to 21.5
