Question

if the curved surface area of a right circular cylinder is 196 pie cm2 and volume is 1372 pie cm3 find radius of cylinder​

Answer 1

Answer:

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Answer 2

A N S W E R :

NOTE :

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Let the radius of the base and height of the cylinder be r cm and h cm respectively. Then, h=7 cm

Now, Volume = 448π cm3

πr2h=448π

r2=7448=64

r=8 cm

Therefore,

Lateral surface area  =2πrh=2×722×8×7

Lateral surface area =352 cm2

Total surface area =2πr(r+h)=2×722×8(7+8)

Total surface area =75280

Total surface area=754.28 cm2