If the length of a rectangle is four times as large as the width. its area is 100 square inches find the width and length of the rectangle?

Question

A=L*W

 

If the length of a rectangle is four times as large as the width. its area is 100 square inches find the width and length of the rectangle?

Answer 1

  L   w  = A

(4w)w = 100

 

4w^2 = 100

 

 w^2 = 25

 

 w= 5   <---- cannot have negative measures

 

 rectangle is 20 x 5