![]() ![]() All the other cases can be calculated with our triangular prism calculator. The only case when we can't calculate triangular prism area is when the area of the triangular base and the length of the prism are given (do you know why? Think about it for a moment). Using law of sines, we can find the two sides of the triangular base:Īrea = (length * (a + a * (sin(angle1) / sin(angle1+angle2)) + a * (sin(angle2) / sin(angle1+angle2)))) + a * ((a * sin(angle1)) / sin(angle1 + angle2)) * sin(angle2) Triangular base: given two angles and a side between them (ASA) Using law of cosines, we can find the third triangle side:Īrea = length * (a + b + √( b² + a² - (2 * b * a * cos(angle)))) + a * b * sin(angle) Step 2: Substitute the given values in the formula V B × H where 'V', 'B', and 'H' are the volume, base area, and height of the prism. Triangular base: given two sides and the angle between them (SAS) The steps to determine the base area of the prism, if the volume of the prism is given, are: Step 1: Write the given dimensions of the prism. However, we don't always have the three sides given. ![]()
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