Question

the diameter of a cylinder is 14cm.the height of the cylinder is 9cm. calculate the Volume and curved surface area​

Answer 1

The volume is 1386 cm³ and curved surface area is 396 cm².

Explanation:

Given that,

The diameter of a cylinder is 14 cm

Height of the cylinder is 9 cm

We need to find the volume and curved surface area​ .

If r is the radius, r = 14/2 = 7 cm

Volume of a cylinder is given by :

`V=\pi r^2 h\\\\V=(22)/(7)* (7)^2 * 9\\\\V=1386\ \text{cm}^3`

The curved surface area of the cylinder is given by :

`A=2\pi r h\\\\A=2* (22)/(7)* 7* 9\\\\A=396\ \text{cm}^2`

So, the volume is 1386 cm³ and curved surface area is 396 cm².