![]() Thus the volume of a triangular prism is 12cm 2 Volume = area of triangular cross-section × perpendicular height All lengths are the sameĬross sectional area = 1/2 × 3 × 2 cm 2 =3cm 2 That is volume of prism = Area of cross section × heightĪ) Volume = area of cross-section × perpendicular heightī) Volume = area of cross-section × perpendicular heightįind the volume of a rectangular prism whose length is 15′, it’s width is 11′ī) A cube is bounded by six square faces. If for example the cross-sectional shape was a rectangle then you just use the standard formula to calculate the area of a rectangle and multiply that by the height to find the volume. You could even have an irregular cross-sectional shape, in which case the area is often given. Hexagonal, triangular, rectangular, trapezium, isosceles, square, and almost any quadrangular shape. The cross-sectional shape of the prism can vary a lot, and could be You are therefore using cross-sectional area to find volume. The principle here is that if you can figure out the cross-sectional area (A) of the prism then it is a simple matter of multiplying that with the length ( l) to find the volume ( V). The surface area of the cross section multiplied by the length usually gives the volume. The volume of a prism is found by multiplying the area of its cross section by the height of the prism.Ī prism has a uniform cross- section throughout the length. ![]() ![]() ![]() Recognize that the volume of a rectangular prism is the product of the lengths of its base, width, and height (V = b × w × h).Ī prism is a solid with a uniform cross – section.At the end of this lesson, student should be able to: ![]()
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