Question

the circumference of the base of a right circular cylinder is 220 CM if the height of a cylinder is 2 metre find the lateral surface area of a cylinder

Answer 1

Csa of cylinder is 2pi*r*h
given is 2*pi*r
h=2m
Csa =220*2=440m2

Answer 2

$\huge \underline \mathsf \red {Solution:-}$

Let the height and radius of the cylinder be h and r cm respectively.

Given:

• Height is 2m = 200cm

As, circumference of base = 220

2πr = 220

➠ $\mathsf {2 \times\frac{22}{7} \times r = 220}$

r = 35 cm

➠ $\mathsf {2 \times\frac{22}{7} \times 35 \times h}$

➠ $\mathsf {2 \times\frac{22}{7} \times 35 \times 220}$

As, Lateral surface of cylinder = 2πrh

= 44000 cm²

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