Answer:
8^2 + b^2 = 10^2, and b = 6
Explanation:
This is a right triangle, so use the Pythagorean theorem
a^2 + b^2 = c^2, where 8 is a, b is b, and 10 is c
8^2 + b^2 = 10^2
64 + b^2 = 100
100 - 64 = 36
b^2 = 36
b = 6
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