Question

The length of a rectangle is three times its width.if the perimeter is 84 m.find the lenght of the rectangle

Answer 1

Let the widht be x m.
So lenght will be 3x m.

Now perimeter = sum of 4 sides of rectangle

x + x + 3x + 3x = 84

2x + 6x = 84

8x = 84

x = 10.5m = width

Lenght = 3 * 10.5 = 31.5m

Hope it helps!

Answer 2

Here is ur answer. If it is right and thanked and if it is wrong then comment me. But i have checked in my book it is right.

hope it helps!