Answer :
The area of a circle can be calculated using this formula:
[tex]A=\pi r^2[/tex]Where "r" is the radius of the circle.
The formula for calculating the circumference of a circle is:
[tex]C=2\pi r[/tex]Where "r" is the radius of the circle.
If you need to find the area of a circle and you don't know its radius but you know the circumference, you can substitute the value of the circumference into the formula for calculating the circumference of a circle, and then solve for "r":
[tex]r=\frac{C}{2\pi}[/tex]Once you know the radius, you can substitute it into the formula for calculating the area of a circle and find its area.
Hence, the answer is:
- Substitute the value of the circumference into the formula for calculating the circumference of a circle, and solve for the radius "r".
- Substitute the value of the radius "r" into the formula for calculating the area of a circle.