Find the area of a square with a diagonal of 8 cm.

Answer 1

let each side be x

by Pythagoras:
x^2 + x^2 = 8^2
2x^2 = 64
x^2 = 32

since x^2 is also the area, the area is 32 cm^2

Answer 2

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

Use the Pythagorean theorem:

x^2 + x^2 = 8^2

Solve for x.