Question

The length of a rectangle is three centimeters less than the width. If one area of the rectangle is 53 cm^2, find the dimensions of the rectangle. (explain how you got step by step)

Answer 1

A= Area
l= length
w= width

l= w-3cm
A= l*w 
A= 53cm²
53= l*w
(plug in value of length)
53= (w-3)(w)
0=w²-3w+53
Use the quadratic formula:
(in the pictures attached)
w= about 9cm
l=9-3= 6cm

Any questions?