The internal radius of a metallic pipe is 2cm and its external radius is 2.7cm.If the length of pipe is 10cm , then find the volume of metal used for this pipe $$\left(\pi = \frac{22}{7} \right)$$ 

Correct option is D

Given:

Internal radius of pipe =2cm

External radius of pipe =2.7cm

Length of pipe = 10cm

Formula Used:

Volume of hollow cylinder = $$\pi ((r_1)^2 -(r_2)^2) h$$​​

Where$$r_1,r_2$$ and h are external radius, internal radius and height of cylinder

Solution:

Volume of metal =$$\pi ((2.7)^2 -(2)^2) \times 10$$​​

$$= \frac{22}{7} \times (3.29) \times 10$$​ 

​$$= 103.4cm^2$$​​