Area, Surface Area and Circumference

Radius 5 in
Find the area of the circle.

• 15.7 inches²

• 31.4 inches²

• 314 inches²

• 78.5 inches²

Diameter 14 inches
Find the area of a circle.

• 615.44 in²

• 153.86 in²

• 43.96 in²

• 87.92 in²

Radius 4 inches
Find the circumference of the circle. 

• 25.12 in

• 12.56 in

• 50.24 in

• 200.96 in

A bicycle tire has a diameter of 20 inches. How many inches is one full revolution of the wheel?  

• 31.4 in

• 1256 in

• 125.6 in

• 62.8 in

A circle pool has a radius of 7.5 ft. Monica wants to know how many ft of a pool cover she needs to buy?

• 23.55 ft²

• 176.63 ft²

• 47.1 ft²

• 706.5 ft²

Ray wants to build a fence around his circular garden outside. The garden has a radius of 6 ft. How many feet of fencing does he need?

• 37.68 ft

• 18.84 ft

• 113.04 ft

• 452.16 ft

Trevor is making a tablecloth for a circular table with a diameter of 40 inches. How many inches of tablecloth does he need?

• 125.6 in²

• 251.2 in²

• 1256 ft²

• 1256 in²

Find the Surface Area

Find the surface area.

• 56 cm³

• 56 cm²

• 100 cm²

• 100 cm³

Find the surface area.

• 384 in²

• 352 in²

• 384 in³

• 352 in3