Story Problems with Circle Formulas

A farmer grows potatoes on a circular plot of land that has a radius of 20 meters. Each potato plant requires 2 square meters of soil. What is the maximum number of potato plants the farmer can grow?

• 80

• 628

• 1256

• 2512

Tags

CCSS.7.G.B.4

Jason is painting a large circle on one wall of his new apartment. The largest distance across the circle will be 8 feet. Approximately how many square feet of wall will the circle cover?

• 200.96 ft²

• 50.24 ft²

• 25.12 ft²

• 20.96 ft²

Tags

CCSS.7.G.B.4

A lawn sprinkler sprays water 5 feet in every direction as it rotates. Jaxson is installing 3 sprinklers in a lawn for a client. How much total area will be covered by the 3 sprinklers?

• 235.5 ft²

• 60.25 ft²

• 78.5 ft²

• 47.1 ft²

Tags

CCSS.7.G.B.4

Hilary's Horse Hideaway is buying dirt to fill their circular training area. The training circle is 28 feet across. The dirt is sold in truckloads that cover 75 square feet of ground. How many truckloads of dirt will Hilary need?

• 8 truckloads

• 32 truckloads

• 33 truckloads

• 9 truckloads

Tags

CCSS.7.G.B.4

Macy's unicycle has a radius of 18 inches. How many inches does the unicycle cover in one rotation of the wheel?

• 56.52 inches

• 1,017.36 inches

• 36 inches

• 113.04 inches

Tags

CCSS.7.G.B.4

Mrs. Cole is wrapping mason jar lids with ribbon for thank-you gifts from her baby shower. Each lid has a radius of 1.5 inches. Hobby Lobby sells 60-inch packages of ribbon for $3.50. How much will Mrs. Cole spend on ribbon if she is making 50 thank-you gifts? (hint: round up to determine the amount of ribbon needed for each gift before you find the amount needed for all 50)

• $14.50

• $28.25

• $30.00

• $31.50

Tags

CCSS.7.G.B.4

A circular flower garden covers 28.3 square feet of space in Jacob's backyard. How wide is the flower garden? (hint: diameter from area)

• 6 feet

• 9 feet

• 3 feet

• 8 feet

Tags

CCSS.7.G.B.4

A business has a circular lawn in front of the building (shown in the picture). How many steps would it take to walk around the entire lawn? (Round your answer to the nearest whole number)

• 4,416 steps

• 118 steps

• 150 steps

• 236 steps

Tags

CCSS.7.G.B.4

Fallon owns a daycare and is putting a fence around the circular playground. The playground has a diameter of 22 feet. She can only buy fencing by the foot, and it costs $4.75 per foot. How much money will she spend on fencing for the playground?

• $332.50

• $1,805

• $104.50

• $328.13

Tags

CCSS.7.G.B.4

JW has security cameras in his yard that can see up to 25 yards in every direction. How much area is covered by each security camera?

• 1,962.5 yd²

• 490.6 yd²

• 100 yd²

• 78.5 yd²

Tags

CCSS.7.G.B.4