Circumference and Area of Circles

If my diameter is 19 inches, what is my radius?

• 38 inches

• 9.5 inches

• 59.66 inches

• 119.32 inches

A bike tire has a radius of 1.5 feet. How far will the bike go if the wheel rotates around 3 full times? (round your answer to the nearest foot)

• about 28 feet

• about 14 feet

• about 9 feet

• about 5 feet

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 area of a circle with the diameter of 10 cm ?

• 66 cm²

• 78.5 cm²

• 66.5 cm²

• 314 cm²

If the circumference of a circle is 69.08 ft, what is the DIAMETER?

• 22 ft

• 11 ft

• π ft

• 0 ft

If the circumference of a circle is 138.16 ft, what is the RADIUS?

• 22 ft

• 11ft

• π ft

• no ft

The _____ is the distance from the center to any point on the circle.

• diameter

• radius

• π

• center

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

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

• 10.5 ft

• 42 ft

• 65.94 ft

• 131.95 ft

Find the area of the circle

• 21.98 units²

• 153.86 units²

• 87.82 units²

• 615.44 units²