Question

Of a cylinder is 1540 cm square.If the height is 4 times the radius.Find the height of the cylinder.

Answer 1

Hey,

Total surface area of cylinder = 2πr(r+h) = 1540 cm

h = 4r

TSA = 2πr(r+4r)

TSA = 2πr(5r)

TSA = 10πr²

10πr² =1540

πr² =154

r² = 49

r = 7

h = 4r

h = 4 * 7

h = 28cm... ANSWER

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