Question

The length of a rectangle is 9cm less than three times the width. If the perimeter is

38cm, what is the length and width of the rectangle?

Answer 1

Explanation:

Hey there!

Let the width be x. Then the length will be 3x - 7.

Perimeter (p) = 38cm.

We have;

Perimeter (p)= 2(length+wide)

38 = 2(3x-9+x)

38 = 8x - 18

38+18 = 8x

X = 56/8

Therefore, x = 7cm

3x-9 = 3*7-9

= 12cm.

Therefore, wide= 7cm and length= 12cm.

Hope it helps...