Question

The ratio of length to width in a rectangle is 3 to 1. If the perimeter of the rectangle is 136 ft, what is the length of the rectangle?

Answer 1

• 51 feet

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Let the length be l and width be w.

The ratio of length to width in a rectangle is 3 to 1:

• l/w = 3/1 ⇒ l = 3w

The perimeter of the rectangle is 136 ft:

• P = 2(l + w)

• 136 = 2(3w + w)
• 68 = 4w
• w = 68/4
• w = 17

The length is:

• l = 3*17
• l = 51 ft

The length of the rectangle 51 feet.