Question

the circumference of the base of cylinder is 76.35cm and its height is 30cm.find the curved surface area and the volume of cylinder​

Answer 1

Answer:

volume of cylinder = 13895.7 cm³ C.S.A. of cylinder =2289.25 cm²

Step-by-step explanation: given circumference of the circle = 76.35 cm

                                                         height = 30 cm

Radius of the cylinder

circumference = 2πr

76.35 = 2 × 22/7 × r

76.35 × 1/2 × 7/22 = r

12.14 cm = r

r = 12.14 cm

⇒ volume of the cylinder

= πr²h

= 22/7 × 12.14 × 12.14 × 30

= 13895.7 cm²

⇒C.S.A of the cylinder

= 2πrh

= 2 × 22/7 × 12.14 × 30

= 2289.25 cm²