A rhombus is enlarged and has a new perimeter of 40 feet. If the original perimeter was 10 feet, by what factor was the rhombus enlarged?

Question

anonymous · Answer

The area and perimeter of a rhombus are the same as that of the same size square. Think of a very loose box that when you push the top one way, the sides lean with it. The perimeter doesn't change, the volume doesn't change, only the shape changes. So I think it is safe to think of squares or rectangles here.
So if you quadruple the perimeter, what does that do to the area of a square?

anonymous · Answer

forget the square with this 10 and 40, think of a 2x3 rectangle