Answer:
6.4
Step-by-step explanation:
Area = (Base * Height)/2
Height = 5.4
Base = Area/Height = 2*(17.28/5.4) = 6.4
Answer: 6.4
Extra:
Hypotenuse = sqrt(Base^2 + Height^2) = sqrt(6.4^2 + 5.4^2) = sqrt(40.96 + 29.16) = sqrt(72.12) = 8.49234949822...
