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The ratio of total surface area to lateral surface area of cylinder whose radius is 80cm and height 20cm is?

The ratio of total surface area to lateral surface area of cylinder whose radius is 80cm and height 20cm is?

Grade:8

2 Answers

kavin bala s
39 Points
6 years ago
TSA=(2πr*r+2πrh).LSA= 2πrh.So,TSA/LSA=(2πr*r+2πrh)2πh=1+(80/20)=5. If it not clears your doubt pls reply to me.
Sahil Balyan
12 Points
6 years ago
r=80cm, h=20cmTSA=2πr(h+r)TSA=2π(80)(20+80)TSA=2π(80)(100)............ (1)LSA=2πrhLSA=2π(80)(20)..........(2)eq. (1)/eq.(2)We getTSA/LSA=16000π/3200π=5so, TSA:LSA=5:1

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