Question

The length of a rectangle floor is 4 feel longer than its width w. The area of the floor is 525 ft^2. what are the dimensions of the floor?

Answer 1

Answer:

let length be x feet and width be x-4

Step-by-step explanation:

area of rectangle=lb

=x(x-4)=525

x^2-4x=525                       a2-2ab=(a-b)^2-b^2

=(x-2)^2-4=525

(x-2)^2=529

(x-2)=$\sqrt{529}$

=x-2=23

x=25=length

x-4=width=25-4=21

hence length and breadth are 25 and 21 respectively.