Answer:
40 * 6.5 = 260 --> D. 260.00
To answer this question, you will use the formula given to find the volume of concrete.
V = 3.14 x 0.6^2 x 30
V = 33.912m³
The volume of concrete is approximately 33.912 m³.
*assume the pool is empty at the beginning
a) plug 3.25 into the equation and solve
h(3.25) = 600*3.25 = 1950 gallons
b) after 3.25 hours the total amount of water will be 1950 gallons