Circle Area Circumference Terms Pi

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 the area of the circle, leaving your answer in terms of π

• 121π cm²

• 22π cm²

• 484π cm²

• 121π m²

Daniel wants to buy cookies for her friend. The radius of a cookie is 5 inches. What is the cookie’s circumference?

• 10 in

• 2.5 in

• 15.7 in

• 31.4 in 

A circular swimming pool is 21 feet in diameter. What is the circumference of the pool?

• 10.5 ft

• 42 ft

• 65.94 ft

• 131.95 ft

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)?

• 11.32 ft

• 12.25 ft

• 10.99 ft

• 8.75 ft

What is the circumference of a circle with a radius of 5 in terms of π ?

• 5 π square units

• 10 π square units

• 25 π square units

• 50 π square units

The radius of a circular clock is 13 centimeters. What is the area?

• 530.66 cm²

• 81.68 cm²

• 40.84 cm²

• 348.99 cm²

find the area of the circle with radius 3 cm below.

• 100 cm²

• 225 cm²

• 9 cm²

• 28.26 cm²

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72