Circumference and Area of a Circle

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

What is the area of this circle?

• 8322.13

• 1134.11

• 4536.46

• 1267.09

Ray wants to build a fence around his circular garden outside. The garden has a radius of 6 ft. How many feet of fencing does he need?

• 37.68 ft

• 18.84 ft

• 113.04 ft

• 452.16 ft

The most popular size pizza at Pizza Parlor is a large pizza with a 12-inch radius. Which of the following best represents the circumference of this pizza?

• 62.84 inches

• 60 inches

• 75.36 inches

• 452.16 inches

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference?

• 11.32 ft

• 12.25 ft

• 10.99 ft

• 8.75 ft

ENRICHMENT: 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

Other than the formula C=πd what is another formula for circumference of a circle?

• C=2π

• C=2πr

• C=πr²

• C=πd²

Trevor is making a tablecloth for a circular table with a diameter of 40 inches. How many inches of tablecloth does he need? 

• 125.6 in²

• 251.2 in²

• 1256 ft²

• 1256 in²

A circle pool has a radius of 7.5 ft. Monica wants to know how many ft of a pool cover she needs to buy?

• 23.55 ft²

• 176.63 ft²

• 47.1 ft²

• 706.5 ft²

ENRICHMENT: A circular table top has an area of 324 square inches. Which measurement is closest to the radius of the table top in inches?

• 10.2

• 18.0

• 56.5

• 103.1