Answer:
What is it equal to?
Step-by-step explanation:
You can check using the Pythagorean Theorem: a^2+b^2=c^
a=10
b=41
c=42 (because it is longest)
10^2+41^2=42^2
100+1681=1764
1781=1764
Since they are not equal, this is not a right triangle
Hope this helps<span />
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The square root of 81 equals 9. This can be known through understanding the roots of perfect squares. After this, you multiply 8 x 9 to get a final answer of 72.