Determine the Circumference and Area of Circles

Tyra bought a lolli-pop with a diameter of 2 1/2 inches. What is the circumference of the lolli-pop to the nearest tenth of an inch?

• 3.9 inches

• 15.7 inches

• 6.3 inches

• 7.9 inches

The bicycle tire has a radius of 13 inches. What distance will the tire have traveled in a straight line after 1 revolution? Round to the nearest tenth of an inch.

• 81.6 inches

• 72.2 inches

• 40.8 inches

• 20.4 inches

A window cleaner has several windows to clean for a local business. What is the area of the circular window to the nearest hundredth of a square foot?

• 38.41 square feet

• 10.99 square feet

• 153.86 square feet

• 9.42 square feet

Tags

TEKS.MATH.7.9B

Nancy is replacing the mat on her trampoline. The circular mat has a diameter of 18 feet. What is the area of the trampoline mat to the nearest square foot?

• 57 square feet

• 254 square feet

• 113 square feet

• 1,017 square feet

The US Treasury Department set the dimensions of a one-dollar coin in 1979. A one-dollar coin has a diameter that measures 26.5 millimeters. What is the circumference of the coin to the nearest millimeter?

• 80 mm

• 81 mm

• 83 mm

• 82 mm

Tags

TEKS.MATH.7.9B

A pizza restaurant uses special placemats for birthday parties. The happy face on the mat has a diameter measuring 20 centimeters. Determine the area of the happy face to the nearest square centimeter.

• 1,256 cm²

• 314 cm²

• 126 cm²

• 63 cm²

A merry-go-round at an amusement park has a radius of 8 meters. Determine the circumference of the merry-go-round to the nearest tenth of a meter.

• 201.0 meters

• 37.7 meters

• 50.2 meters

• 25.1 meters

A circular rug has a radius of 1 yard. Determine the area of the rug to the nearest tenth of a square foot.

• 3.9 ft²

• 4.9 ft²

• 18.8 ft²

• 28.3 ft²

Tags

TEKS.MATH.7.9B

The diameter of an NBA basketball is 29.5 inches. Determine the circumference of the basketball to the nearest inch.

• 46 inches

• 93 inches

• 94 inches

• 185 inches

Tags

TEKS.MATH.7.9B

A pizzeria in San Antonio, Texas is known for making a pizza that has a 52-inch diameter. What is the area of the pizza to the nearest square inch?

• 163 in²

• 327 in²

• 2,123 in²

• 8,491 in²