The length of a rectangle is three times the width. The perimeter of the rectangle is 40 inches. What is the area of the rectangle (in square inches)

Question

asked Oct 12, 2021 117k views

2 Answers

CLo · Answer 1 · 2021-10-12T22:24:26+0000

Answer:

The length of the rectangle: 3x

The width of the rectangle: x

Theres 2 lengths and 2 widths for every rectangle.

So the full perimeter is 3x+x+3x+x = 8x

8x;

= perimeter

= 40 inches

8x=40

x=40/8

x=5 inches

Length is 3x, substitute in for x

l = 3(5)

l = 15