Answer: The diameter of the pipe is 3.8 feet .
Step-by-step explanation:
Hi to answer this question we have to apply the next formula:
Volume of a cylynder: π x r^2 x h
Where r is radius and h is height (length of the pipe in our case)
Replacing with the values given and solving for r:
100 = π x r^2 x9
100/ π x 9 = r^2
√(100/ π x 9) = r
r = 1.88
Since the diameter (D) is equal to:
D = 2r
D = 2 x 1.88 = 3.8 feet
