Question

A length of a rectangle is twice its width. The perimeter of the rectangle is 126 feet.

Answer 1

252

Step-by-step explanation:

Because you just multiply:

126 times 2 = 225

Answer 2

Answer: length = 42ft width = 21ft

Step-by-step explanation:

Find width:

L = 2W
P = 2(L + W) = 126

Thus
126 = 2(2W + W)
126 = 2(3W)
126 = 6W
126/6 = W
21 = W

Thus, width = 21ft

But L = 2W => L = 2(21) => L = 42ft

Therefore, length = 42ft and width = 21ft