The perimeter of a rectangular floor is 90 feet. How do you find the dimensions of the floor if the length is twice the width?

Question

7650 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-12-20T17:12:14

Length of the rectangle #=15 # feet
Breadth of the rectangle #=30# feet.

Let the breadth of the rectangle #=x#

So, the length of the rectangle #=color(blue)(2) times x#

The perimeter given #=90# feet

As per the formula for perimeter of a rectangle

Perimeter #=2 times# (length + breadth )

#90 = 2 times (x + 2x )#

#90 = 2times(3x )#

#90 = 6x #

#x=90/6#

#color(blue)(x=15#

So the length of the rectangle #=15 # feet, breadth of the rectangle #=30# feet.