Area of Semicircles Quarter Circles

Harper, David, and Nora are having a fun day at the park. They come across a beautiful semicircle-shaped pond. They wonder about the area of the pond. If the radius of the pond is 5 cm, can you help them calculate the area?

• 10 cm^2

• 78.5 cm^2

• 25 cm^2

• 39.25 cm^2

Grace, Harper, and Avery are designing a magical castle for their school project. They decided to add a quarter circle window with a radius of 3 ft to their castle. Can you help them calculate the area of the window?

• 5.5 sq ft

• 12 sq ft

• 9 sq ft

• 7.07 sq ft

The radius of a semicircle is 3 centimeters. What is the semicircle's area?

Isla, Benjamin, and Harper are having a fun day at the park. They come across a giant semicircular sandbox with a diameter of 12 m. Can you help them calculate the area of the sandbox?

• 72π m^2

• 24π m^2

• 36π m^2

• 18π m^2

Determine the area of the semicircle above.

Mathematical Equivalence

ON

Find the area of the semicircle. Round you answer to the nearest hundredth.

• 19.63

• 9.8125

• 9.81

• 39.25

what is the area of this semicircle ?

• 100.48cm²

• 80cm²

• 200.96cm²

• none of the above

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

• 58.88

• 78.50

• 7.85

• 157.00

Mrs. Wilson placed the welcome mat shown below on her front door step. What is the area of her welcome mat in square feet? Leave in terms of π.

• 2π

• 8π

• 10π

• 4π

Find the area of this quarter circle with a radius of 18 cm.

• 1017.36 cm

• 254.34 cm

• 26.52 cm

• 123.65 cm