The perimeter of a rectangle is 64cm. the length is 8cm less than three times the width. Find the length and width?

In a rectangle, we know that 2 sides are equal and another 2 sides are equal, and the perimeter formula is 2 x length + 2 x width.

Therefore,

We can make the width the variable "X". The length is 3X-8.

Therefore,

2 (X) + 2 (3X-8) = 64;

2X+6X-16=64;

8x=80;

X=10

So, the width is 10 and the length is 22