Question

The total surface area of a cylinder is 440 m square find the height of cylinder if its radius is 7 m

Answer 1

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Answer 2

Given radius = 7 m
Total surface area of the cylinder =  440 m²
We know that total surface area = 2πr(h +r)
2πr(h + r) = 440 m²
2 * 22/7 *7 (h + 7) = 440 m²
44(h + 7) = 440
h + 7 = 440/44
h = 10 - 7
h = 3 m

The height of the cylinder is 3 m.

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