Calculate the area and perimeter of a square:

Calculate the area and perimeter of a square with w = 5´ and l = 6´.  Be sure to involved units in your answer.

Solution:

A  = lw                                    P = 2l + 2w

A  = (5)(6)                               P  = 2(5) + 2(6)

A  = 30 square feet                 P  = 10 + 12

P = 22 feet

Figure: Square

Above given square is a rectangle having four equal sides, as display above.

The area of a square is computed using the following formula:

A  = a²                                                         

The perimeter of a square is computed using the following formula:

A = 4a                                                                 

Area of the square is always expressed in square units, and the perimeter of a square is always expressed in the original units.