surface area for triangular prism formula

#Surface area for triangular prism formula how to#

Thus, the point we have found is a local minimum. The surface area of triangular prism is the area of rectangles one, two, and three, and the area of triangles one and two. The second derivative of this guy is strictly positive for positive s, implying the function is concave up for positive s.

To do so you must take the second derivative. We'll end up with h = 2 * 5 2/3 *7 1/3 / sqrt(3).ĮDIT: It's a bit pedantic, but technically you have to make sure that it's a local minimum at the value of s that I've found. From there, we can easily find the height by substituting into our previous formula. We want to find the minimum so we set SA' = 0. SA = 2(sqrt(3)/4)s 2 + 3sh (the first term is the 2 triangular parts and the second term is the three lateral, rectangular parts).Īs a function of s alone, we have SA = 2(sqrt(3)/4)s 2 + 4sqrt(3)350/s. This is equivalent to h = 4*350/(sqrt(3)s 2 ). V = (sqrt(3)/4)hs 2 = 350 cm 3 (I converted mL to cm 3 for ease). Then the area of the base is (sqrt(3)/4)s 2. Let s be the base of the triangle and h be the height. This is an ordinary optimization problem so it requires the use of basic calculus. Re-read your post before hitting submit, does it still make sense.Show your work! Detail what you have tried and what isn't working.Use proper spelling, grammar and punctuation.Give context and details to your question, not just the equation.

#Surface area for triangular prism formula how to#

Help others, help you! How to ask a good question Asking for solutions without any effort on your part, is not okay. Beginner questions and asking for help with homework is okay. Post your question and outline the steps you've taken to solve the problem on your own. Do not use ChatGPT in a question or an answerĭon't just post a question and say 'HELP'.It is determined with the formula: Surface area bh + L (s1 + s2 + s3) where, b is the bottom edge of the base triangle, h is the height of the base triangle, s 1, s 2, and s 3 are the sides of the triangular bases. Do not solicit or offer payments to complete your assignments or tests Surface area of a triangular prism is the sum of the areas of all the faces of the prism.

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