Question

The circumference of a circle is 7π in.

What is the area of the circle? ​
A.3.5pi m^2
B.12.25pi m^2
C.14pi m^2
D.49pi m^2

Answer 1

The correct option is B.

Explanation:

It is given that the circumference of a circle is 7π units.

The circumference of the circle is

`S=2\pi r`

`7\pi =2\pi r`

`7=2r`

`r=3.5`

The area of the circle is

`A=\pi r^2`

`A=\pi (3.5)^2`

`A=12.25\pi`

The area of circle is 12.25π square unit.

Therefore the correct option is B.