Question

The circumference of a circle is 7xm.

What is the area of the circle?
A. 3.57x m²
B. 12.257x m2
C. 147xm2
D. 497xm2

Answer 1

A = 3.57 m²

Explanation:

Given that,

The circumference of a circle is 7xm.

The expression for the circumference of a circle is given by :

`C=2\pi r`

r is the radius of the circle

`r=(C)/(2\pi)\\\\r=(7)/(2* (22)/(7))\\\\r=1.11\ m`

The area of a circle is given by :

`A=\pi r^2\\\\A=3.14* (1.11)^2\\\\A=3.89\ m^2`

Out of given option,

A = 3.57 m²

So, the area of the circle is 3.57 m².