1。 This box can hold ice cream: 15X 10X4=600 cubic centimeters.

Because 600 cubic centimeters =0.0006 cubic meters, 1 kg = 1000 grams,

So this box can hold ice cream:1.3x0.0006x1000 = 0.78g.

2。 7.2 liters =7.2 cubic decimeters.

So the height of water in the container is: 7.2 divided by (3x2)= 1.2 decimeter.

So the volume of this pear is: (13.5- 1.2)x3x2.

=73.8 cubic decimeter.