Find the Radius Word Problem

What is the radius of this circle?

• 18in

• 36in

• 9in

• 6in

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

• 38 inches

• 9.5 inches

• 59.66 inches

• 119.32 inches

Which formula would you use to answer: Lauren's bicycle tire has a diameter of 20 inches. How many inches is one full revolution of the wheel?

• 81 in²

• 29.8 in2

• 59.7 in2

• 283.4 in2

• 5 meters

• 10 meters

• 15 meters

• 20 meters

• 15

• 29

• 46

• 93

48 cookies

• 48 cookies

• 24 cookies

• 8 cookies

• 4 cookies

• 50.24  yd

• 25.12 yd

• 38.92  yd

• 12.56 yd

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? Use 3.14 for π!

• $9.42

• $7.07

• $3.53

• $4.71

A circular ground has an area of 144π sq ft. Jenny rides the bike around it. How far does she travel to complete a single round? 

• 72π ft

• 12π ft

• 24π ft

• 6π ft