Therefore, 84 square feet of cloth is required for a tent. Since the kaleidoscope is in the shape of a triangular prism, we can use the formula for the surface area to find its height.ĥ76 = 9 \(\times\) 7.8 + (9 + 9 + 9)H ĥ76 – 70.2 = (27)H ![]() It is mentioned that the surface area of the kaleidoscope is 576 \(cm^2\) and the base height is 7.8 cm. The formula to find volume of triangular prism is the product of area of triangular base and height of prism. Find the height of the kaleidoscope.Īs stated, the length of each side of the kaleidoscope is 7.8 cm. The surface area of the kaleidoscope is 576 \(cm^2\), and its base height is 7.8 cm. Plug the decimal dimensions in SA bh + (s1 + s2 + s3)H, where ‘b’ and ‘h’ are the base length and height of the triangle ‘s1’, ‘s2’, and ‘s3’ are the lengths of three sides of the triangle ‘H’ the prism's height, and find the surface area. It is the sum of the areas of all the faces of the prism. Hence, the surface area of a triangular prism is 264 square centimeters.Ĭathy recently purchased a new triangular kaleidoscope in which the sides are 9 cm long. Surface Area of Triangular Prisms Decimals. The surface area of a triangular prism is the area that is occupied by its surface. ![]() Surface area of a triangular prism = bh + (a + b + c)H We can find the surface area of the triangular prism by applying the formula, Here are the steps to compute the surface area of a triangular prism: 1. The height of the triangular prism is H = 15 cm The base and height of the triangular faces are b = 6 cm and h = 4 cm. ![]() The Surface Area of a Prism Formula is given as, Surface Area Of A Rectangular Prism is A 2 (wl + lh + hw) Surface Area Of A Triangular Prism is A bh + L (s1 + s2 + s3) Where, a apothem length of the prism. Find the surface area of the triangular prism with the measurements seen in the image.įrom the image, we can observe that the side lengths of the triangle are a = 5 cm, b = 6 cm and c = 5 cm. The surface area of a prism is measured in terms of square units.
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