Question 752928
{{{a^2 + b^2 = c^2}}} Start with the pythagorean theorem


{{{4^2 + x^2 = 10^2}}} Plug in the known values, let x be the unknown value, now solve for x


{{{16 + x^2 = 100}}}


{{{x^2 = 100-16}}}


{{{x^2 = 84}}}


{{{x = sqrt(84)}}}


{{{x = 9.16515}}} Use a calculator here


{{{x = 9}}} Round to the nearest foot (as instructed)


Answer: 9 feet