Answer:
a^2 +b^2 =c^2
9^2 + 40^2 = 41^2
81+1600=41^2
1681=41^2
41^2 = 41^2
pythagorean theorem
7^2+24^2 = 25^2
49+576 = 25^2
625 = 25^2
25^2 = 25^2
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