Math
posted by Marie .
In a right triangle, find the length of the side not given. Approx to the three decimal places. a and b are the length of the legs and c is the length of the hypotenuse. b = 4"sqrt"2 and c = 9

a^2 + b^2 = c^2
a^2 + 16*2 = 81
a^2 = 49
a = 7