Area and Circumference

find the area of the circle below.

• 100 cm

• 225 cm

• 9 cm

• 28.26 cm

If my diameter is 19 inches, what is my radius?

• 38 inches

• 9.5 inches

• 59.66 inches

• 119.32 inches

If the area of a circle is 25 π in² , then the diameter is?

• 10 in

• 5 in

• 25 in

• pi in

What is the area of this circle?

• 50.27

• 78.23

• 98.12

• 201.06

What is the formula for area of a circle given the radius?

• A = πr

• A = 2πr

• A = πd

• A = πr²

A clock face has a diameter of 10 inches. What is the approximate area of the clock face in square inches?

• 314 in²

• 31.4 in²

• 7.85 in²

• 78.5 in²

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

• 28 cm

• 43.96 cm

• 87.96 cm

• 7 cm

Find the area of the circle.  Use Use A=πr² 
Pi = 3.14

• 43.96

• 153.86

• 87.82

• 307.72

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

What formula is this used for:
πd

• Area

• Circumference 

• Surface Area

• Volume