Starter Questions Q1. 35% of 360 Q2. Calculate 5 + 6 x 7 Q3. Expand 2( y – 5 ) 1

Volume of Solids Prisms Learning Intention To understand the prism formula for calculating volume.

Volume of Solids Definition : A prism is a solid shape with uniform cross-section Hexagonal Prism Cylinder (circular Prism) Triangular Prism Pentagonal Prism Volume = Area of Cross section x length

Sometimes called the altitude Any Triangle Area h = vertical height Sometimes called the altitude h b 4

Any Triangle Area Example 1 : Find the area of the triangle. 6cm 8cm 5

Volume of Solids Definition : A prism is a solid shape with uniform cross-section Q. Find the volume the triangular prism. Triangular Prism Volume = Area x length = 20 x 10 = 200 cm3 10cm 20cm2

Volume of a Triangular Prism Working Triangle Area = = 2 x4 = 8 cm2 4cm Volume = Area x length = 8 x 10 = 80cm3 10cm 4cm

Find the volume of the triangular prism. Example Find the volume of the triangular prism. Working Triangle Area = = 3 x 3 = 9 cm2 Volume = Area x length = 9 x 30 = 270cm3 6cm 3cm 30cm Total Area = 6+6+30+40+50 = 132cm2

Volume of Solids Now try Ex 5.1 Pg 30 Ch 2