Answer:
b =

Explanation:
a^2 + b^2 = c^2 is the Pythagorean theorem
if A = 2 and C = 10 then you get
2^2 + b^2 = 10^2
or 4 + b^2 = 100
b^2 = 96
b = square root of 96 or approximately 9.8
goodluck on your schoolwork/homework!
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sorry for any errors or bad explanations.