Problem Set 1
A circular pond has a diameter of 31 meters. If Evelyn walks one lap around the edge of the pond, how far does she walk? Round your answer to the nearest tenths place.
97.3 m
Samuel is buying a hula hoop at the store. The circular hoop he finds has a radius of 19 inches. What is the total circumference of the hula hoop? Round your answer to the nearest tenths place.
119.3 in
Kathryn is replacing the glass inside of a circular window. If the diameter of the window is 4 feet, how large will the area of the glass need to be? Round your answer to the nearest tenths place.
12.6 sq.ft
A circular rug on Daren's floor has a radius of 3 meters. How many square meters does the rug take up on the floor? Round your answer to the nearest tenths place.
28.3 sq.m
Sheena is buying a belt for her new pants. Stretched out (like a circle), Sheena finds that the pants have a diameter of 49 centimeters. What is the minimum length that the belt should be? Round your answer to the nearest tenths place.
153.9 cm
Mr. Fosmire is buying a circular trampoline for his house. If the one he buys has a diameter of 6 meters, how many square meters of area will Mr. Fosmire have to bounce on the trampoline? Round your answer to the nearest tenths place.
28.3 sq.m
Lily is checking the size of the tires on her car. If the wheels have a radius of 42 centimeters, what is the circumference of the car's tires? Round your answer to the nearest tenths place.
263.8 cm
In the middle of a ballroom sits a circular dance floor. This dance floor has a radius of 11 meters. How much area do dancers in the ballroom have to move around on? Round your answer to the nearest tenths place.
379.9 m
Luis is running laps around a circular track. If the circle has a diameter of 32 yards, how long is one lap around the track? Round your answer to the nearest tenths place.
100.5 yds
A phone tower provides cell service to phones within a circular area around it. If the distance from the tower (which is at the center of this area) to the edge of its coverage is 5 kilometers, what is the total area within which the tower provides cell service? Round your answer to the nearest tenths place.
78.5 sq.km
Alicia is building a circular pen on her farm for her pigs. The pen will have a radius of 46 feet. How many feet of fencing will Alicia need around the outside of the pen? Round your answer to the nearest tenths place.
288.9 ft
A lawn sprinker rotates in a full circle in order to water all the grass around it. If the water stream from the sprinkler can reach out 10 feet, how large is the area of grass that the sprinkler covers? Round your answer to the nearest tenths place.
78.5 sq.ft
Tariq is practicing archery by shooting a bow and arrow at a circular target. If the diameter of the target is 14 feet, how large is the total area in which Tariq can land a successful shot? Round your answer to the nearest tenths place.
153.9 sq.ft
Investigators are surrounding a crime scene with barricade tape that says "Do Not Cross". The crime scene is in the shape of a circle with a radius of 21 meters. How many meters of tape will the investigators need to completely encircle the crime scene? Round your answer to the nearest tenths place.
131.9 m
Jacin is baking a circular cake and is about to ice the top of it. If the cake has a diameter of 7 inches, how many square inches of icing will Jacin need in order to cover the entire top? Round your answer to the nearest tenths place.
38.5 sq.in
River is trying to seal a pipe by wrapping it with tape. If the pipe has a diameter of 8 inches, what length of tape is needed to fully wrap around the pipe? Round your answer to the nearest tenths place.
25.1 in
Iris is building a fence around a circular lot that has a diameter of 29 meters. Each linear meter of fencing costs $8. How much will the circular fence cost Iris?
$728.48
Kesean is building a fence around a circular lot that has a radius of 17 meters. Each linear meter of fencing costs $15. How much will the circular fence cost Kesean?
$1601.40
Leo will purchase fabric priced at $4 per square foot. Leo wants to make a circle with a radius of 4 feet and will purchase only the amount needed for the circle. What is the total cost of the fabric Leo needs to purchase?
$200.96
Jolene is constructing a circular firepit that will be fitted with a metal ring around the outside. If the firepit has a radius of 23 centimeters, how many centimeters long must the metal be for Jolene to be able to make a complete ring around the pit? Round your answer to the nearest tenths place.
144.4 cm