So, the volume of the triangular prism that Amanda bought is 120 cubic centimeters. The answer is the surface area of the above triangular prism is 486 square inches. Then, multiply the sum of the triangle sides by the height of the prism (H) and add the values together for the answer, making sure to include the appropriate unit of measurement. Volume & surface area of rectangular prisms. First, substitute the given values into the formula. Find the areas of each of the three rectangular faces, using the formula for the area of a rectangle: length x width. 5th Grade Math Worksheets: Geometry Rectangular prisms & cubes - missing sides. The surface area of a right triangular prism formula is: Surface area (Length × Perimeter) + (2 × Base Area) ( (S)1 + (S)2 + h)L + bh. Here are the steps to compute the surface area of a triangular prism: 1. So, the base area \(B=\frac~\times~8~\times~5~\times~6\) The formula for the surface area of a right triangular prism is calculated by adding up the area of all rectangular and triangular faces of a prism. Height of the triangular base, c = 6 inches Step 1: Create a net for the triangular prism by 'cutting' two edges of the triangular faces and unfolding. So, the volume of the triangular prism is 72 cubic centimeters.Įxample 2: Determine the volume of a triangular prism in which the base of the triangle is 8 inches, the height is 6 inches and the length of the prism is 12 inches. Example 1: Find the volume of a triangular prism with a base area of 12 \(cm^2\) and with a height of 6 cm.Īccording to the volume of triangular prism formula,
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