Answer:
sqrt(89)
approx. 9.433981
Explanation:
remember the Pythagorean theorem, where a and b are the legs and c is the hypotenuse
a^2 + b^2 = c^2
now substitute in the given values
a=5
b=8
5^2 + 8^2 = c^2
25 + 64 = c^2
89 = c^2
sqrt (89) = c
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