the perimeter of a sandbox at connect academy measures 72 feet if the lenght of the sandbox is 21 feet what is the width of the sandbox?

Answer 1

Perimeter is equal to 2 times the length plus 2 times the width. So, if the length is 21 feet, we would add the length twice (21 + 21 = 42). We'd subtract 42 (the length doubled) from the perimeter of 72 feet (72 - 42 =30). We would divide 30 (the width doubled) by 2 for the width of one side (30 ÷ 2 = 15). The width is 15 feet.

Answer 2

Perimeter is the sum of all sides. A sandbox is a rectangular shape, so P = 2 x length + 2 x width

P = 2 l+ 2w

72 = 2 * 21 + 2w

72 = 42 + 2w

72 - 42 = 2w

30 = 2w

30/2 = w

15 = w

The width of the sandbox is 15 feet.