Circumference Area Terms of Pi

Find the circumference of a circle with a diameter of 11 millimeters.

• 34.6 mm

• 30 mm

• 25.3 mm

• 34.54 cm

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

• 3 m 

• 9.42 m

• 12 m

• 18.84 m

Find the area, in "in terms of pi" of a circle with a RADIUS of 11 inches.

• 11π inches²

• 22π inches²

• 44π inches²

• 121π inches²

Find the area, in "in terms of pi" of a circle with a diameter of 8 inches.

• 8π inches²

• 64π inches²

• 4π inches²

• 16π inches²

Choose the answer which best describes how these formulas are related to each other.

• They both solve for circumference. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

• They both solve for circumference, in the first uses diameter and the second uses pi.

• They both solve for area. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

• They both use circumference to solve for pi. One uses radius, the other uses diameter.

Find Circumference. Round to the nearest hundredths.

• 40.69 yd

• 5.65 yd

• 11.30 yd

• 22.61 yd

Find Circumference. Leave answer in terms of pi (π)

• 36π

• 12π

• 6π

• 24π

What is the radius?

• 18

• 72

• 38

• 14

In words, describe this formula

• The area of a circle is equal to pi times the radius squared

• The circumference of a circle is equal to the pi times the diameter.

• The circumference of a circle is equal to pi times the radius squared

• The area of a circle is equal to pi times the diameter

Find Circumference.

• 87.92 cm

• 43.96 cm

• 21.98 cm

• 3.14 cm