the circumference of a cylinder pipe is 507 cm and length is 20 cm find the curved surface area.
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Answer:
Circumference= 2πr
507 = 2×22/7×r
r = 507×7/22×2
radius = 80.7cm approx.
CSA = 2πrh
= 2×22/7×80.7×20
= ________cm
Ans. =
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