Applying the Understanding of the Circumference of a Circle to Solve Problems

A Circle has a radius of 6 inches.  What is the circumference of the circle? (Best Choice)

• 3π or about 9.42 in

• 6π or about 18.84 in

• 12π or about 37.68 in

• 36π or about 113.04 in 

What is the circumference of this circle?

• 3.14 cm

• 37.68 cm

• 6 cm

• 68.4 cm

Round your answer to the nearest whole number. The circumference of the circle is 201meters. What is the radius?

What is the circumference of a circle with a radius of 21 cm? Answer in terms of π.

• 125.6π cm²

• 42π cm²

• 100.1π cm²

• 28π cm²

A circle has a diameter of 8. What is the circumference of the circle?

Choose the answer closest to the circumference.​ ​ (a)  

• 376.8 mm

• 753.6 mm

• 11,304 mm

• 42,216 mm

Enrique purchases an antique bowl for his mom for Mother's Day. The diameter of the bowl is 18 cm. What is the circumference of the bowl? (Round to the nearest whole number.)

• 28 cm

• 57 cm

• 254 cm

• 1017 cm

What is this formula used for:

πd

• Area

• Circumference

• Surface Area

• Volume

What is the formula for the circumference of a circle?

If a circle is measure in centimeters, the units for its circumference would be:

• cm

• cm²

• cm³