QUESTION 10 An aquarium 3m long, 2m wide, and 4m deep is full of water. Find the work needed to pump all of the water out of the aquarium. Use the fact that the density of water is 1000 kg/m³.

A coffee can is shaped like a cylinder with height 7 inches and radius 5 inches. Find (a) the surface area and (b) the volume of the can. Round to the nearest tenth.

a For the through in the shape of half-cylinder, find the volume of water it will hold Use 3.14 and disregard the thickness b If the trough is to be painted inside and out, find the number of square feet to be painted Use 3.14.