Finding Exact and Approximate Circumference

What is the EXACT circumference of a circle with a radius of 1.5 feet?

• 4.71 ft

• 9.42 ft

What is the APPROXIMATE circumference of a circle with a diameter of 10 inches?

• 31.4 inches

• 15.7 inches

Match the EXACT answer to the APPROXIMATE answer:

• 18.84 mm

• 25.12 mm

• 12.56 mm

• 31.4 mm

• 21.98 mm

What is the EXACT circumference of a circle with a radius of 12 inches?

• 37.68 inches

• 75.36 inches

What is the EXACT circumference of a circle with a diameter 4.2 cm?

• 8.4π cm

• 26.376 cm

• 13.188 cm

• 4.2π cm

What is the APPROXIMATE circumference of a circle with a diameter of 16 km?

• 50.24 km

• 25.12 km

• 10 ft

• 3.14 ft

• 20 ft

• 60 mm

• 3.14 mm

• 20 mm

• 30 mm

What is the APPROXIMATE circumference of a circle with a diameter of 13.6 cm rounded to the nearest tenth?

• 42.7 cm

• 85.4 cm

What is the APPROXIMATE circumference of a circle with a radius of 4.5 km rounded to the nearest tenth?

• 14.13 km

• 14.1 km 

• 28.26 km

• 28.3 km