3. 6 cm Volume = area of base x heightArea of Base = 6x6 = 36cm 2 Volume = 36x 6 = 216 cm 3

4. 10 cm 6 cm Volume = area of base x heightArea of Base = 10x6 = 60cm 2 Volume = 60x 6 = 360 cm 3

5. 6 cm 4 cm 12 cm Volume = Surface Area x (height or length) Dependent on which face it is sitting on Surface Area = ½x6x4 = 12cm 2 Volume = 12x 12 = 144 cm 3

6. Volume = Surface Area x (height or length) Dependent on which face it is sitting on Surface Area 1 triangle = ½x4x4=8cm 2 6 triangles = 8 x 6 (for 6 triangles =48 cm 2 Volume = 48 x 4 = 192 cm 3 8 cm 4 cm

7. Volume = Surface Area x (height or length) Dependent on which face it is sitting on Volume = 452.389 x 20 = 9047.787 cm 3 = 9048 cm 3 R = 12 cm 20 cm Surface Area = r2r2 = (12 2 ) = 452.389 cm 2

8. To calculate the VOLUME of ALL Prisms = Surface Area x Height or surface Area x Length Volume is always in units 3

9. Exercise 4A p145 and Ex 4B P 146 Home work ex 4B P146 qu. 3-5