CubeĪ cube unfolded into a net is made up of six identical squares.Ī triangular prism unfolded into a net is made up of two triangles and three rectangles. To calculate the surface area we therefore find the area of the two circles and the rectangle and add them together.īelow are examples of right prisms and a cylinder that have been unfolded into nets: Rectangular PrismĪ rectangular prism unfolded into a net is made up of six rectangles. In the case of a cylinder the top and bottom faces are circles and the curved surface flattens into a rectangle with a length that is equal to the circumference of the circular base. To calculate the surface area of the prism, we find the area of each triangle and each rectangle, and add them together. In order to calculate the surface area of the prism, we can then simply calculate the area of each face, and add them all together.įor example, when a triangular prism is unfolded into a net, we can see that it has two faces that are triangles and three faces that are rectangles. When a prism is unfolded into a net, we can clearly see each of its faces. A solid that is unfolded like this is called a net. This is easier to understand if we imagine the prism to be a cardboard box that we can unfold. Output: The area of triangular prism is 126.000000įormula for calculating the surface area:Īs stated above, the prism contains two triangles of the area (1/2)*(b)*(h) and three rectangles of the area H*s1, H*s2 and H*s3.Surface area is the total area of the exposed or outer surfaces of a prism.
Output: The area of triangular prism is 132.000000 Given the base, the height of the triangle, height of prism and the length of each side of triangle base and the task is to calculate the surface area of the triangular prism. Where “b” is the length of the base, “h” is the height of the triangle, “s1, s2, s3” are the respective length of each side of the triangle, and H is the height of the prism (which is also the length of the rectangle). In mathematics, a triangular prism is a three-dimensional solid shape with two identical ends connected by equal parallel lines, and have 5 faces, 9 edges, and 6 vertices. Check whether triangle is valid or not if sides are given.
#Area of a prism how to
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