Question

curved surface area of area of the cylinder is 220 cm² and the height is 10 c.m , what is its volume ?​

Answer 1

Given :-

CSA = 220 cm²

Height = 10 cm

To Find :-

Volume

Solution :-

We know that

CSA = 2πrh

220 = 2 × 22/7 × r × 10

220 = 44/7 × 10 × r

220 = 440/7r

220 × 7/440 = r

1 × 7/2 = r

3.5 = r

Now,

Volume = πr²h

Volume = 22/7 × (3.5)² × 10

Volume = 22/7 × 1225/100 × 10

Volume = 22/7 × 1225/10

Volume = 26950/70

Volume = 2695/7

Volume = 385 cm³

Answer 2

Answer:

curved suface area =22/7×r×h

220 cm ²=2×22/7×r×10

r=220×7/2×22×10

r=3.5 cm

volume =22/7×r²×h

=22/7×35×10×35/10×10 (remov decimal )

= 385cm²