Question

Sarah's grandmother has a square blanket that covers an area of 25 square feet. Sarah wants to put a string of pearls around the sides of the blanket. How many feet long will the string of pearls have to be for Sarah to complete the job?

Answer 1

20 ft

Explanation:

area of square = (side)^2

area of square = 25 ft^2

(side)^2 = 25 ft^2

side = 5 ft since (5 ft)^2 = 25 ft^2

The side of the square measures 5 ft.

All around the square is the perimeter.

perimeter = 4 * side

perimeter = 4 * 5 ft

perimeter = 20 ft

Answer: 20 ft