Question

Sarah is decorating her house for Christmas with lights. She wants to surround a circular window with special LED lights that makes a pattern. The window has a diameter of 18 inches. How long must the the string of lights be in order to surround the entire window?

Answer 1

56.57 inches

Explanation:

If Sarah wants to surround her circular window, she wants to cover the circumference of the window

The formula for calculating circumference of a circle = Dπ = 18 x 22/7 = 56.57 inches