Volume of Triangular Prism

Volume of a Triangular Prism

Area

Length

Volume of a prism = Area x length

Area of triangle = ½ x base x height

Area = ½ x 7 x 6= ½ x 42= 21 cm2

2.

15 cm

10 cm

7 cm

1.

6 cm

Area = ½ x 10 x 15= ½ x 150= 75 cm2

THE AREA OF A TRIANGLE

Area = ½ x base x height

base

8 cm

6 cm

7 cm

Area of triangle = ½ x 8 x 6 = ½ x 48 = 24 cm2

Volume = area x length = 24 X 7 = 168 cm3

Example 1

Area of triangle = ½ x 5 x 4 = ½ x 20 = 10 cm2

Volume = area x length = 10 X 6 = 60 cm3 4 cm

6 cm5 cm

Example 2

Area of triangle = ½ x 5 x 4.2 = ½ x 21 = 10.5 m2

Volume = area x length = 10.5 X 6 = 63 m3 420 cm

6 m5 m

Example 3