Question

The lengths of the two legs of a right triangle are 8 centimeters and 2 centimeters. What is the exact length of the hypotenuse?

square root of sixty-eight centimeters

square root of one hundred twenty-eight centimeters

square root of two hundred fifty-six centimeters

square root of four thousand ninety-six centimeter

All I need is the formula ; ; I don't know what to do to solve it.

Answer 1

\[leg ^{2}+leg ^{2}=hyp ^{2}\]Therefore,

Answer 2

\[8^{2}+2^{2}=hyp ^{2}\]\[64+4=hyp ^{2}\]\[68=hyp ^{2}\]\[hyp=\sqrt{68}\]

Answer 3

your first choice in your list of choices

Answer 4

Thank you so much~