Sally has made one litre of ice cream that she needs to store in a container. She has two containers to choose from.

Question

Container one: A cylinderof radius 4cm and height 20 cm

Container two : A cuboid of width 9cm, height 6cm and depth 18cm.

With good mathematical communication

Explain which container sally should use.

Answer 1

The volume of ice cream is 1 liter. 1 liter = 1000 cubic centimeters

you want to determine the volume of a cylinder and the cube. Whichever has the volume more than 1000 cubic cm will be right for storing the ice cream.

Volume of cylinder = pi*r^2*h. r = 4cm, h = 20cm

= 1005 cubic cm

Volume of cuboid = width*ht.*depth

= 9*6*18

= 972 cubic cm

Cylinder has little more volume than ice cream volume so it should be used for storing.