Question

the curved sarface area of a cylinder is 1980 cm² and the radius of its base is 15 cm. finf the height of the cylinder.(pie=22/7)

Answer 1

Hey Chika ❤

Here's the Solution -

Given,
C.S.A = 1980cm²
radius = 15 cm

We know that,
$c.s.a \: = 2\pi \: rh$
Now,
=>1980 = 2 × 22/7 × 15 × h
=> h = 1980 × 7 / 2 × 22 × 15
=> h = 13860 / 660
=> h = 21cm.

Hence, the height of cylinder is 21cm.

Hope it helps ✔