Area/circumference of a circle

A circular rug has a diameter of 53 centimeters. Tiffany wants to sew a decorative braid around the rug. How many centimeters of braid does she need? Use 3.14 for π and round to the nearest tenth.

• 8820.3

• 166.4

• 83.2

• 53

A group has raised money to build a memorial fountain in the center of town. The fountain will be circular with a small statue in the center. The distance from the center of the statue to the outer edge of the fountain will be 15 feet. On the day the fountain is complete, the group will place a ribbon around the outside of the circle to be cut in a ceremony. How many feet of ribbon will they need? Assume that the ribbon is placed 6 inches outside of the edge of the fountain, all the way around.

• 100.63

• 96

• 94.3

• 97.3

A circle has a diameter of 10 feet. What is the circle’s circumference? Use 3.14 for pi.

• 15.7

• 314

• 31.4

• .314

Find the area the cookie with a diameter of 10 inches. Use 3.14 for pi. Round to the nearest hundredth.

• 78.55

• 77.65

• 31.4

• 80.68

The radius of a cake is 7 in. If I eat half the cake, what is the area of the remaining cake? Use 3.14 for pi and round to the nearest hundredth.

• 78.83

• 76.93

• 75.79

• 153.86

A circle has a circumference of 28.26. What is the area? Round to the nearest tenth.

• 63.6

• 64

• 65.5

• 74.9