Area of Circles Review

What is the formula for calculating the area of a circle?

What is the area of the given circle?

A circle has a radius of 5. What is the area of the circle?

Round to the nearest tenths place.

• 78.5

• 31.4

• 314.0

Find the area of a circle with a diameter of 12 cm.

• 36π cm²

• 113.04 cm²

• 144π cm²

• 452.16 cm²

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 28.26 m²

Sally tried to solve for the area of circle. Her work is shown. What mistake did Sally make.

• Sally squared π incorrectly.

• Sally multiplied the π and radius incorrectly.

• Sally used diameter instead of the radius.

• No mistake. Sally solved the problem correctly.

What is the Area Formula for a Circle?

• A = $\pi$ * r * r

• A = $\pi$ * d

• A = 2 * $\pi$ * r

Find the area of the circle in terms of π

Find the area of the quarter circle. Round you answer to the nearest hundredth.

• 58.88

• 78.50

• 7.85

• 157.00

Find the area

• 183.12

• 38.2

• 184.3

• 153.86