Area of Circle

I want to find out how long I need my string lights to be to decorate my bike. The radius of a tire is 13 inches. How much lighting do I need to decorate both tires?

• 82 inches

• 164 inches

• 530 inches

• 41 inches

• Diameter

• Radius

• Circumference

• :)

In order to find area of a circle, you have to ______________

• Square the radius

• add the radius

• divide the radius

• Not sure:((

Find the area of a circle with a diameter of 6 inches.

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

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

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

find the area of the circle with radius 3 cm below.

• 100 cm²

• 225 cm²

• 9 cm²

• 28.26 cm²

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

What is/are the formula(s) to find the area of a circle?

• πr²

• 2πr

• √π