Find the volume, area of curved surface and total surface area of a solid cylinder whose height is 20cm and the radiusis 7cm [take pi =22/7 ]
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Step-by-step explanation:
- Here,Radius = 7 cm & Height = 20 cm
- So, Volume of cylinder = πr^2h
= 22/7 * (7)^2*20
= 22/7*7*7*20
= 22*7*20
= 3080 cm^3
- Now, Curved surface area of cylinder = 2πrh
= 2*22/7*7*20 = 880 cm^2
- Then, Total surface area of cylinder = 2πr(r+h)
= 2*22/7*7(7+20) = 2*22*27 = 1188 cm^2
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