The area of a square is 36 square feet. If each side is lengthened by 4 feet, how could the perimeter of the new square be calculated?

Area of a square is length multiplied by height.

36=l*h

In a square length is the same as hiehgt.

36=l*l

What multiplied by itself equals 36? 6. So the current length of the sides is 6ft.

Each side is increased by 4ft, so 6+4=10, the new lengths are 10ft.

Perimeter is all the sides added together, the square has four sides each 10ft long so 10+10+10+10=40

The new perimeter is 40ft