Circles and Polygons Test Review

A dinner plate has a radius of 8 3/4 centimeters. What is the circumference of the plate, rounded to the nearest inch?

• 27 cm.

• 55 cm

• 240 cm

• 480 cm

A car tire has a diameter of 15 inches. If the tire makes 30 revolutions, how far will the car have traveled?

• 47.1 in

• 1,413 in

• 94.2 in

• 706.5 in

What is the area of this circle in square inches?

• 21.98 in²

• 43.96 in²

• 153.86 in²

• 615.44 in²

What is the area of the circle in square inches?

• 100.48 in²

• 3,215.36 in²

• 803.84 in²

• 50.24 in²

The circumference of a circle is 37.68 inches. What is the area of that circle in square inches?

• 118.3

• 12

• 452.16

• 113.04

This is a drawing of John’s backyard in inches. What is the area of his backyard in the drawing? If it costs $1.20 per square inch for new grass, how much will it cost to sod the yard?

• 84 in²; $100.80

• 50 in²; $60

• 84 in²; $70

• 50 in²; $41.67

The area of a room is 120 ft². Georgia is re-flooring the room with wood that costs $2.83 per square foot. What is the cost to re-floor the room?

• $339.60

• $42.40

• $679.20

Find the area of the composite figure shown.

• 40 cm²

• 12.5 cm²

• 52.5 cm²

• 60 cm²

Find the area of the composite figure shown.

• 84 cm²

• 48 cm²

• 112 cm²

• 36 cm²

What is the formula for area of a circle?

• π*r*r

• π*d

• π*r*2