Area of Parts of Circles

If the diameter of a semicircle is 10 cm, what is the area of the semicircle?

• 78.5 cm²

• 157 cm²

• 15.7 cm²

• 39.25 cm²

Tags

CCSS.7.G.B.4

What is the area of a quarter circle with a radius of 8 cm?

• 50.24 cm²

• 100.48 cm²

• 200.96 cm²

• 12.56 cm²

Tags

CCSS.7.G.B.4

A semicircle has a diameter of 28 cm. Calculate its area.

• 98π cm²

• 196π cm²

• 49π cm²

• 147π cm²

Tags

CCSS.7.G.B.4

Identify the radius of a quarter circle if its area is 9π cm².

• 3 cm

• 6 cm

• 18 cm

• 9 cm

Mia, Liam, and Nora are planning to build a small semi-circular garden in their backyard. If the diameter of the garden is 12 cm, what would be the area of the quarter circle of the garden?

• 36π cm²

• 18π cm²

• 9π cm²

• 72π cm²

Tags

CCSS.7.G.B.4

A quarter circle has a radius of 5 cm. What is its area?

• 19.625 cm²

• 39.25 cm²

• 78.5 cm²

• 98.125cm²

Tags

CCSS.HSG.C.B.5

The radius of a semicircle is 7 cm. What is the area of the semicircle?

• 76.93 cm²

• 153.86 cm²

• 43.96 cm²

• 307.72 cm²

Tags

CCSS.7.G.B.4