Question

A ladder 33.6 feet long reaches to the top of a building when its foot stands 12.6 feet from the
building. How high is the building?

Answer 1

Answer:

31.15

Step-by-step explanation:

$a^{2}$ + $b^{2}$ = $c^{2}$

$12.6^{2}$ + $b^{2}$ = $33.6^{2}$

158.76 + $b^{2}$ = 1128.96

-158.76.           -158.76

             $b^{2}$ =   970.2

             $\sqrt{b}$.  =$\sqrt{970.2}$

              b    =  31.15 (rounded)