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August 1, 2014

August 1, 2014

Posted by **Cherie** on Monday, December 3, 2012 at 11:27pm.

You helped me with a question earlier today about finding surface area of a triangular prism with the base being an equilateral triangle . I got the answer 386.6 Is this correct.? I tried to follow your equation and am having a bit of trouble. Thanks for all your help.

- Math -
**Steve**, Monday, December 3, 2012 at 11:43pmThat's what I get.

if you have a hard time figuring the area of an equilateral triangle, it's time for some further review. It's a 30-60-90 right triangle on each side of the altitude because each angle of the main triangle is 60 degrees.

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