![]() ![]() Find the volume of a prism whose height is 10 cm, and the cross-section is an equilateral triangle of side length 12 cm. ![]() Step 2: We know that the volume of a triangular prism is equal to B × l. By the formula of a triangular prism, volume ½ abh. ![]() Find the areas of each of the three rectangular faces, using the formula for the area of a rectangle: length x width. In this example, the base area of the prism is 100 sq. To calculate the volume of a triangular prism, find the area of the triangular cross-section and multiply it by the length of the prism (or height of the prism). Here are the steps to compute the surface area of a triangular prism: 1. Find the volume of an oblique trapezoidal prism given in the figure. Finding the volume of an oblique trapezoidal prism when BASE AREA and LENGTH are known. The volume of a triangular prism is how much space there is inside of the shape. Volume ( V) Base Area × l, here base area 361 m 2, l 12.5 m. ![]()
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