Question

Find the height of the cylinder whose radius is 7 cm and the total surface area is 968 sq​

Answer 1

Let height =h

Total surface area=2πr(r+h)

r=7cm

⇒968=2×

7

22

×7(7+h)

⇒

44

968

=7+h

⇒h+7=22

⇒h=22−7

=15cm.

Answer 2

Let height =h

Total surface area=2πr(r+h)

r=7cm

⇒968=2×22/7×7(7+h)

⇒ 968/44=7+h

⇒h+7=22

⇒h=22−7

=15cm.

Step-by-step explanation:

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