Answer:
14,130 feet³
Step-by-step explanation:
2r=d
2r=30
r=15
Formula for the volume of a cone is: 
π
²
=





14,130 feet³
67.27
155 = 1.55 x 43.4 = 67.27
Check the picture below.
now, recall, both blades are congruent, thus a = b, so c² = a² + b² -> c² = b² + b².
Time taken is equal to distance divided by speed
So time is 50/5 = 10 seconds