Answer:
A = 20 unit^2
Step-by-step explanation:
We can find the length of the hypotenuse using the Pythagorean theorem
a^2 + b^2 = c^2
2^2 + 4^2 = c^2
4+16 = c^2
20 = c^2
Taking the square root of each side
sqrt(20) =c
We want to find the area of the square
A = s^2 where s is the side length
A = (c^2)
A = (sqrt(20))^2
A = 20 unit^2
