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26/07/2021 11:40 am
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It is required to make a closed cylindrical tank of height 1m and base diameter 140 cm from a metal sheet. How many square meters of the sheet are required for the same? Assume π = 22/7
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26/07/2021 11:41 am
Let h be the height and r be the radius of a cylindrical tank.
Height of cylindrical tank, h = 1m
Radius = half of diameter
= (140/2) cm
= 70cm = 0.7m
Area of sheet required = Total surface are of tank = 2πr(r+h) unit square
= [2 × (22/7) × 0.7(0.7 + 1)]
= 7.48
Therefore, 7.48 square meters of the sheet are required.