Multiply the length*width*height to get the volume of the prism then, take out the difference between the volumes
Volume of the prism= 1018464
Then just subtract
110-8.75= 101.25. 101.25 divided by 9 = 11.25. Each pizza cost 11.25
Density = Mass/Volume
Density = 6/12 = 0.5 g/mL or 0.5 kg/L
2 apples in the partly filled tray, 11 tents are needed for all the children