Question

find the curved surface area,total surface area,and volume of cylinder with the radius 20cm and hieght 42cm

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Answer 1

Answer:

A≈7791.15cm²

Explanation:

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Answer 2

Answer:

CSA. CSA of cylinder = 2πrh. ⇒ CSA = 2 × 22/7 × 20 × 42. ⇒ CSA = 44/7 × 20 × 42. ⇒ CSA = 44 × 20 × 6. ⇒ CSA = 880 × 6. ⇒ CSA = 5280 cm²

TSA. ⇒ TSA = 2πr(r + h) ⇒ TSA = 2 × π × 20(20 + 42) ⇒ TSA = 40π × 62. ⇒ TSA = 1860π cm²

Volume.

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