The total surface area of closed cylinder is 528 cm square if its radius is 7cm ,find its height .
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Step-by-step explanation:
Given,
R=7cm
TSA=528 sq cm
To find, Height(h)
TSA of cylinder= 2r(r+h)
528sq cm= 2x22÷7x7(7+h)
528sq cm=2x22(7+h)
264sq cm=22(7+h)
264÷22=7+h
132÷11=7+h
12=7+h
therefore, h=12-7
h=5cm
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