Two numbers that add to -8 and multiply to 16.

Area of a square is given by:
A = a2
where a = length of side

Perimeter of a square = 4a
Diagonal of a square = (a)(sqrt(2)) or 1.414 (a)

Example 1: Find the area of a square of side length 15 m
Solution:
Area of a square = a2 = 152 = 225 m2

Example 2: Calculate the area of square, where the square has 35cm side’s length.

-4 and -4
-4 + (-4) = -8
-4•-4 = 16