Volume of cones, spheres and pyramids

What you'll learn

1. 1

   Imagine a party hat 🎉 — that's a cone shape. Now picture a bouncy ball 🏀 — that's a sphere. And a pyramid like the ones in Egypt 🏛️.

2. 2

   Which shape is like a party hat? 🎉

3. 3

   Drag the slider to fill a cone with water 💧 — see how many cone-fulls fill a cylinder of the same height and base.

4. 4

   Find the volume of a cone with base radius 3 cm and height 10 cm. Use π = 3.14.

5. 5

   What is the volume of a cone with base area 12 cm² and height 9 cm?

6. 6

   For a sphere 🏀, imagine filling it with tiny cubes. The formula is V = ⁴⁄₃ × π × r³ — that's 4/3 of π times the radius cubed.

7. 7

   Find the volume of a sphere with radius 6 cm. Use π = 3.14.

8. 8

   What is the volume of a sphere with radius 3 cm? (Use π = 3.14)