The scale factor of a model of a hot air balloon to the actual hot air balloon is 1 to 5. The volume of the actual balloon is 5000m^3.
What is the volume of the model?
0.005m^3
0.025m^3
40m^3<---My answer, Correct?
200m^2
If we assume the balloon is a sphere, I get the same answer as you did ! Bravo !