Answer:
False.
Step-by-step explanation:
The area = 1/2.b.h.
Step-by-step explanation :
The geometric mean of two numbers is the square root of their product:

So, if the product is 8, the geometric mean is 
An easy way is to work out their speed. Speed = distance/time.
First part: Speed = 330/5.5 = 60 mph
Finally, the second part: time = distance / speed
So time = 720/60 = 12 hours
X actually equals the cube root of 6