A vertical water tank is $15ft$ in diameter and $60ft$ high. What is the volume of the tank in cubic feet?

What is the volume of the above tank in cubic meters?

If the above tank were measured and found to have an inside diameter of exactly $15\mathrm{.}00ft$ and a height of $60\mathrm{.}00ft,$ what would be the volume in cubic feet?

What would be the above tank$\text{'}$s volume in cubic meters?

If a well pumps at a rate of $8\mathrm{.}4$gal per minute, how long would it take to fill the tank described above?