Answer: x = 5.3
Explanation:
Since all of the sides of this quadrilateral are congruent, this is a square. We can use the formula for a square's area to solve for x.
Since this figure cannot have a negative side length, we know our answer must be positive. When we square root both sides of the equation, we will only pay attention to the positive answer.
Given:
A = x²
Substitute known:
28.09 = x²
Square root both sides of the equation
±
= x
Square root:
➜ Our answer must be positive
5.3 = x
Reflexive property:
x = 5.3