Area of a Circle for ninth grade: Finding Area based off Perimeter and Vice Versa

The area of the circle equals $36\pi\text{.}$

Calculate the circumference.

$12\pi$

The area of a circle is equal to $25\pi\text{.}$

Calculate the circumference.

$10\pi$

The area of the circle is $100\pi\text{.}$

Calculate its circumference.

$20\pi$

The area of a circle is $16\pi\text{.}$

Calculate its circumference.

$8\pi$

The area of the circle is $49\pi\text{.}$

Calculate the circumference.

$14\pi$

The circumference of a circle is equal to $31\frac{1}{9}$.

Calculate its area.

77

The circumference of a circle is $8\pi$.

Calculate its area.

50.2

The circumference of a circle is equal to 20. What is the area of the circle?

31.831

The area of a circle is $\frac{16}{25}\pi\text{.}$

Calculate the circumference.

$\frac{8}{5}\pi$

The area of a circle is $\frac{9}{16}\pi\text{.}$

Calculate its circumference.

$1.5\pi$

The area of a circle is $\frac{4}{25}\pi$.

Calculate its circumference.

$\frac{4}{5}\pi$

The area of a circle is $\frac{1}{4}\pi$.

Calculate its circumference.

$\pi$