The length of a rectangle is 3 times its width

Asked by admin @ 03/08/2021 in Math viewed by 270 People

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

Answered by admin @ 03/08/2021

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!

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