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प्रश्न
Find
The lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high.
`["Assume "pi=22/7]`
उत्तर
Height (h) of cylindrical tank = 4.5 m
Radius (r) of the circular end of cylindrical tank = (4.2/2)m = 2.1m
Lateral or curved surface area of tank = 2πrh
`=(2xx22/7xx2.1xx4.5)m^2`
= (44 × 0.3 × 4.5) m2
= 59.4 m2
Therefore, CSA of tank is 59.4 m2.
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