Radius and Diameter and Circumference

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

Randy’s circular garden has a radius of 1.5 feet. He wants to enclose the garden edging that costs $0.75 per foot. About how much will the edging cost? 

• $8.00

• $7.00

• $3.50

• $0.50

Jayne has a very large circular lollipop that has a circumference of 25.12 inches. What would the diameter of Jayne’s lollipop be? Use π = 3.14.

• 4 in.

• 8 in.

• 12 in.

• 16 in.

Name the part of the circle pointed by the arrow.

• Radius

• Diameter

• Circumference

• Arc

Find the diameter of a circle if its radius is 7.5 meters. (Type the answer including the units)

Find the diameter of a circle if its radius is 8.42 inches. (Type the answer including the units)

Find the radius of a circle if its diameter is 12.8 feet. (Type the answer including the units)