Question

For a hollow cylinder,if the outer radius is 14cm,inner radius is 7cm,height of cylinder is 7cm,then its volume is

Answer 1

Answer:

$\underline{ \boxed{ \red{ \sf {V = 154cm^{3} }}}}$

★ GivEn :-

• For a hollow cylinder, the outer radius is 14cm.
• The inner radius is 7cm.
• The height of cylinder is 7cm.

★ To Find :-

• The volume of hollow cylinder.

Step-by-step explanation:

We know,

The formula of the volume of a hollow cylinder,

$\red\leadsto \underline{ \boxed{ \red{ \sf{V = \pi h(R - r)}}}}$

• h = height of the cylinder.
• R = outer radius of the hollow cylinder.
• r = inner radius of the hollow cylinder.

→ Putting the values..

$\implies \dfrac{22}{7} \times 7 \times (14 - 7)$

$\implies \dfrac{22}{7} \times 7 \times 7$

$\implies 22 \times 7$

$\underline{ \boxed{ \red{ \therefore{ \sf {V = 154cm^{3} }}}}}$

Answer 2

Question

For a hollow cylinder is the outer radius is 14 cm inner radius is 7 cm height of the cylinder is 7 cm then find its volume ?

Answer

What is given ?

• it is given here that the radius is 14 cm
• the inner radius is 7 cm
• the height is 7 cm

What we have to find ?

• we have to find here its volume

How to find it ?

• we can simply find it by using the formula of hollow cylinder
• V = πh ( R - r )

Now,

putting the value in the formula we get ,

=> 22/7×7×(14-7)

=> 22/7×7×7

=>22×7

=> 154 cm ^3

So, the volume is 154 cm cube .