Mathematics for IGCSE & O level - Equations (Section 6 - No. 7)

Which techniques can be employed for finding the dimensions of a rectangular pen, when knowing the area and perimeter?

Setting up equations to represent the area and perimeter.

Using the quadratic formula to solve for dimensions.

Completing the square on a transformed area equation

Rearranging formulas for the variables, then solving

All these methods can assist in finding the dimensions.