Question

What's the volume of the cylinder of radius 21 cm and height 7 cm?
[$use\pi =\frac{22}{7}$]

• A. $9702c{m}^2$
• B. $8702c{m}^2$
• C. $9402c{m}^2$
• D. $9792c{m}^2$

Answer 1

The correct option is A $9702c{m}^2$

Given that,
Radius of cylinder is 21 cm.
Height of cylinder is 7 cm.

We know that,
Volume of cylinder
$=\pi r^{2}h$

Now,
Volume of provided cylinder
$=\frac{22}{7}\times {21}^2\times 7$
$=9702c{m}^2$