Question 313458
let the width be x cm
the length will be x+5 cm
..
Area of rectangle = L*W
..
x(x+5)=90
x^2+5x=90
x^2+5x-90=0
x^2+15x-6x-90=0
x(x+15)-6(x+15)=0
(x+15)(x-6)=0
x+-15 or 6.
The width cannot be negative
so width = 6 cm.
Length will be 6+5=11cm