Question

The circumference of the base of a cylinder is 44cm and it,s height is 10cm ,then the curved surface area of cylinder is

Answer 1

EXPLANATION.

Circumference of the base of cylinder = 44cm.

Height of the cylinder = 10cm.

As we know that,

Circumference of cylinder = 2πr.

⇒ 2πr = 44.

⇒ 2 x 22/7 x r = 44.

⇒ 44/7 x r = 44.

⇒ r = 7cm.

Curved surface area of cylinder = 2πrh.

⇒ 2 x 22/7 x 7 x 10.

⇒ 2 x 22 x 10 = 440cm².

Answer 2

Answer:

$440cm^{2}$

Step-by-step explanation:

$csa \: = \: 2\pi rh \\ circumference \: = \: 2\pi r \\ so \: \: \: csa \: = cirumference \: \times height \\ circumference \: = 44cm \\ height = 10 \: cm \\ \\ csa = 44 \times 10 \: cm ^{2} \\ csa = 440cm^{2}$