Answer:
7.9 ft
Step-by-step explanation:
with Pythagorean Theorem , the formula is a^2 + b^2 = c^2
81 + b^2 = 144
144-81 = 63
the square root of that is 7.93725393319
round that to the nearest tenth, and you get 7.9ft
Yay! you got the answer!
