The hypotenuse of a right triangle is 7 inches, and one of the legs is square root 13 inches. Find the length of the other leg.

A) 6 inches

B) square root 62 inches

C) square root 128 inches

The answer is A) 6 inches.

First I punch square root 13 in the calculator and got 3.6055 ... then I square the number since the formula has square root on it and got 13. Now the equation look something like this: 13 + b^2 = 49. 49 because 7^2 is 49. Then i subtract 49 by 13 and got 36. Now the equation look like this: b^2 = 36. After I square both side, I get b=6 in.