SOLUTION: A diagonal of a square measures 36 cm. Find its area.

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Question 252876: A diagonal of a square measures 36 cm. Find its area.
Found 2 solutions by rfer, richwmiller:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
36^2/2=648
sq rt of 648 =25.46
25.45 * 25.45=648 sq cm

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
the diagonal of a square is the hypotenuse with the legs as the sides of the square
2a^2=c^2
2a^2=36^2
2a^2=36*36
a^2=18*18*2
a^2 also happens to be the area
so the area is 18*18*2