Question

Find the volume of a cylinder whose r = 3.5 cm, h = 40 cm.​

Answer 1

Given, r = 3.5 cm

h = 40 cm

By using the formula,

Volume of a cylinder = πr2h

= 22/7 × 3.5 × 3.5 × 40

=1540cm³

Answer 2

Answer:

Volume of the cylinder = 1540 cm³

Step-by-step explanation:

Given :

Radius of the cylinder = 3.5 cm

Height of the cylinder = 40 cm

To find :

The volume of the cylinder

Taken :

To find the volume of the cylinder use this formula -:

$\boxed{\sf{V=\pi{r}^{2}h}}$

Where,

V = Volume of the cylinder

Solution :

$:\implies\sf{V=\dfrac{22}{7}\times{3.5cm}^{2}\times40cm}$

$:\implies\sf{V=\dfrac{22}{7}\times(3.5cm\times3.5cm)\times40cm}$

$:\implies\sf{V=\dfrac{22}{\cancel{7}}\times\cancel{12.5}\times40cm}$

$:\implies\sf{V=22\times1.75\times40cm}$

$:\implies\sf{V=38.5\times40cm}$

$:\implies\sf{V={1540cm}^{3}}$

So , the volume of the cylinder is 1540cm³ .