Question

The perimeter of a rectangle is 128 cm. The width is 3 times the length. What are the dimensions of the rectangle?

Answer 1

`Length=16\\width=64`

Explanation:

Perimeter of the rectangle= 128

Let, the Length of the rectangle be 'L'

Width=3*L

Perimeter of the rectangle =2(Length+width)

`128=2(L+3L)\\\\128=2(4L)\\\\4L=128/2\\\\4L=64\\\\L=64/4\\\\L=16\\\\length=16`

Width=4*L= 4*16= 64

`Length=16\\width=64`