Question

the curved surface area of cylinder is 1980CM square and the radius of its base is 15 cm. Find the height of the cylinder.(paya=22/7)

Answer 1

Answer:

radius=15cm

CSA of cylinder = 2πrh

2×22/7*×15×h=1980

h=1980×1/2/×7/22×1/15

therefore,

h=21cm

Answer 2

Given that:
CSA of cylinder =
$2\pi rh$
= 1980 cm^2

therefore,

=> 2 × 22/7 × 15 × h = 1980

=> h = (1980×7)/(22×2×15)

=> h = 315/15

=> h = 21

So, the height of the cylinder is 21 cm...

Hope it helps...

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