Question 766423
"high" can be divided by 2.  Using the value of high divided by 2, calculate the volume.  That is how much water will be needed.  Billy would fill to 5 inches high.  


If want volume of water as cubic feet, then:
{{{(10/(2*12))(8/12)(2)}}} cubic feet of water.


For cubic inches of water,
{{{5*8*(2*24)}}} cubic inches.