Answer:
Step-by-step explanation:
First, we need to find the hypotenuse, so we need to apply the equation from the Pythagorean Theorem
A^2+B^2=C^2.
We know A^2 and B^2, so we need to substitute that into the equation
2^2+4^2=C^2
so now, simplify.
4+16=C^2
20=C^2
Square root of 20 is about 4.5
so 4.5 is the length of the sides of the square.
4.5x4.5=20.25
