Question

If a length of a rectangle is four times its width. What is its perimeter is 90m. How can i find the dimentions

Answer 1

imagine the width is x. So the length is 4x.
put the perimeter into an equation, so it would be
4x+4x+x+x=90m
10x=90
divide by 10
x=9
so the width = 9cm so the length is 36cm
36+36+9+9=90