find the total surface area of a circular cylinder whose radius is equal to 7 m and height is equal to 21 m
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find the total surface area of a circular cylinder whose radius is equal to 7 m and height is equal to 21 m
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Step-by-step explanation:
Let height =h
Total surface area=2πr(r+h)
r=7cm
⇒968=2×22/×7(7+h)
⇒968/44=7+h
⇒h+7=22
⇒h=22−7
=15cm.