Circles Theorem Review

Steven purchases a bowl. The diameter of the bowl is 14 cm.
What is the distance around the bowl?

• 21.98 cm

• 43.98 cm

• 87.96 cm

• 7 cm

A ball has a circumference of 9.42 cm. What is the diameter?

• 29.5788 cm

• 59.1576 cm

• 3 cm

• 1.5 cm

Find the radius of a circle if the area is 201.1 mi²

• 10 mi

• 8mi

• 20 mi

• 5mi

What is the approximate area of the figure pictured?

• 3.53 cm²

• 7.07 cm²

• 5.30 cm²

• 21.20 cm²

Solve.

• 78.5 cm²

• 100 cm²

• 21.5 cm²

• 121.5 cm²

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

• 19.63

• 9.8125

• 9.81

• 39.25

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

• 58.88

• 78.50

• 7.85

• 157.00

The formula for finding the area of a circle is...

If my circumference is 163.28ft, what is my radius?

• 52ft

• 26ft

• 3.14ft

• 163.28ft

If you are going to paint the entire center circle of a basketball court, do you need to know the area or circumference of the circle?

• Area

• Circumference

• Neither