SME
Grade 8 Math
Volume of cylinders, cones and spheres
The main lesson, then each kind of problem it solves.
Volume of cylinders, cones and spheres
Main lesson
Volume of a cone
Use this for “A cone has radius 3 and height 7. What is its volume?” or “A cone holds 18π with height 6: its radius?”
Volume of a sphere
Use this for “A ball of radius 3 cm: its volume” or “A ball just fits in a 4-inch box: is its volume more or less than half of 4³?”
Change one dimension
Use this for “A cylinder holds 60π cm³. What does it hold at 3 times the height?” or “Quadruple the radius of a cone.”
Which volume formula?
Use this for “Which formula finds the volume of a funnel?”