# The length of a triangle is 3 times it width. The perimeter of the rectangle is 48. How do you find its area?

Feb 26, 2016

Write an equation to represent the situation.

#### Explanation:

Assuming the width is x, and the length 3x.

$x + x + 3 x + 3 x = 48$

$8 x = 48$

$x = 6$

The rectangle measures 6 by 18. The formula for area of a rectangle is $L \times W$

$A = L \times W$

$A = 18 \times 6$

$A = 108$

The rectangle has an area of 108.

Hopefully this helps!