Area of a Circle for ninth grade: Applying the formula

A circle has a radius of 10 cm.

Calculate the area of the circle.

$100\pi$

A circle has a radius of 3 cm.

What is its area?

$9\pi$

A circle has a radius of 6 cm.

What is its area?

$36\pi$

A circle has a radius of 8 cm.

Calculate the area of the circle.

$64\pi$

Calculate the area of a circle with a radius of 5 cm.

$25\pi$

Find the area of the circle according to the drawing.

12.566

Find the area of the circle according to the drawing.

153.9

A circle has a diameter of 14 cm.

Calculate the area of the circle.

$49\pi$

A circle has a diameter of 18 cm.

Calculate the area of the circle.

$81\pi$

A circle has a diameter of 22 cm.

Calculate the area of the circle.

$121\pi$

A circle has a diameter of 30 cm.

Calculate the area of the circle.

$225\pi$

A circle has a diameter of 4 cm.

Calculate the area of the circle.

$4\pi$

Find the area of the circle according to the drawing.

5.19

Find the area of the circle according to the drawing.

206

Calculate the area of the circle:

$\frac{9}{25} π$

Calculate the area of the circle:

$\frac{4}{9} π$

Calculate the area of the circle:

$\frac{1}{4} π$

Calculate the area of the circle:

$\frac{1}{16} π$

Calculate the area of the circle:

$\frac{1}{36}$