Circumference Area Terms of Pi

If the radius of a circle is 5 units, what is the circumference in terms of π?

• 10π

• 5π

• 25

• 3.14

If the diameter of a circle is 15 cm, what is the circumference in terms of π?

• 15π cm

• 225π cm

• 7.5π cm

• 30π cm

If the radius of a circle is 7 units, what is the circumference in terms of π?

• 14π

• 7π

• 49

• 3.14

What is the area of this circle in terms of pi?

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

• 36π

• 9π

• 4.5π

• 18π

What is pi used to find? 

• the perimeter of a square

• the area of a rectangle

• radius of a circle

• circumference of a circle

Find the circumference of the circle.

• 78.5 cm

• 15.7 cm

• 7.85 cm

• 19.6 cm

Find the circumference of the circle.

• 31.4 cm

• 78.5 cm

• 314 cm

• 15.7 cm

Pi is approximately equal to?

• Threeve (a combination of 3 and five)

• 19.6

• 7.2

• 3.14

• 5 cm

• 10 cm

• 2.5 cm

• 7.5 cm