The length of a rectangular deck is 4 times its width. If the deck’s perimeter is 20 feet, what is the deck’s area?

Answer 1

The length of a rectangular deck is 4 times its width. If the deck’s perimeter is 20 feet, what is the deck’s area?

We know that permimiter is the distance around the deck. Since it is a rectangle, we will have two short sides and two long sides. So 2L+2W=20

We also know that the length is 4 times the width. So L=4w)

Our new equation is 2(4W)+2W=20

8w+2w=20

10w=20

From there, solve for w, then multiply that answer by 4 to get the length of the rectangle.

Once you have both those numbers, multiply them together to get the area.

Answer 2

P = 2(L + W)

L = 4W

20 = 2(4W + W)

Can you solve for W and answer?