Answer:
B
Step-by-step explanation:
Find the volume of the wading pool
Use V = pi * r^2 * h
Givens
r = 6 feet
h = 1.5 feet
pi = 3.14
2 f^2 takes 2 minutes.
Solution
V = pr * r^2 + h
r = d/2
r = 6 / 2
r = 3 feet
Put the givens into the formula
V = 3.14 * 3 * 3 * 1.5
V = 42.39 cubic feet
Time
2 cubic feet takes 1 minutes
42.39 cubic feet takes x
2/42.39 = 1/x Cross multiply
2x = 42.39 Divide by 2
2x/2 = 42.39/2
x = 21 rounded to the nearest whole number.
