1. Finding the Volume of 3D Shapes

2. How many 3D shapes can you name?
Warm Up:
How many 3D shapes can you name?
Cone
Hexagonal prism
Sphere
Cube
Cuboid
Cone
Cylinder
Square based pyramid
Triangular based pyramid
Triangular prism
Hexagonal prism
Cube
Triangular based pyramid 1 2 3 4 5
Cuboid
Triangular prism
Sphere
Cylinder 6 7 8 9
Square based pyramid

3. Last Class…
-We learned how to find the volume of:
Cuboids
Triangular Prisms
Cylinders

4. Find the volume of each of the following:
V = 330 cm3
V = 4710cm3
V = 66cm3
*Use pi=3.14

5. What is different about this question?
ACTIVITY– Find the Volume
*Use pi=3.14
What is different about this question?
V = m3

6. ACTIVITY– Find the Volume
Find the volume given the diameter. Use pi = 3.14
V = mm3
V = cm3
V = 9420mm3

7. Some More Practice:

8. Plenary - Find the Volume of Prisms (C)

9. LO: To be able to find the Volume of Prisms (C)

10. LO: To be able to find the Volume of Prisms (C)

11. V= (Base area × height) ÷ 3
Volume of pyramids
Note
The height must be the perpendicular height from the base.
V= (Base area × height) ÷ 3

12. Example– Find the Volume
V = 192 cm3

13. ACTIVITY 4– Find the Volume
V = 30 cm3
V = 80 cm3
V = 600 cm3 3
Extension:
V = 360 feet
V = ft3
V = 288 unit3

14. Volume of cones V= (π × r × r× height) ÷ 3 *Use pi=3.14 Note
The height must be the perpendicular height from the base.
*Use pi=3.14
V= (π × r × r× height) ÷ 3

15. Example – Find the Volume
*Use pi=3.14
V = cm3

16. ACTIVITY 5– Find the Volume
V = cm3
V = cm3
V = ft3
Extension:
*Use pi=3.14
V = units3
V = unit3
𝑐 2 = 𝑎 2 + 𝑏 2

17. Volume of spheres
*Use pi=3.14
V= (4× π × r × r × r) ÷ 3

18. Example – Find the Volume
*Use pi=3.14
V = cm3

19. ACTIVITY 6– Find the Volume
V = m3
V = cm3
V = in3
Extension: 3
V = 360 feet
*Use pi=3.14
r = 4.41 ft
V = cm3

20. Extension: Find the Volume of Chocolate
V = mm3
*Use pi=3.14

21. Exit Slip: Find the volumes of the 3D shapes shown:
*Hand in when complete*
SHOW YOUR WORK!