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OpenStudy (princess_kylee):
The length of a side in an equilateral triangle is 5 inches. Find the area of the triangle.
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OpenStudy (wolf1728):
Triangle Area = (1/2) base * height
OpenStudy (wolf1728):
The base is 5 inches the height has to be calculated
OpenStudy (wcrmelissa2001):
find the height using pythagoras' theorem. |dw:1463923571916:dw| So to find the height, it's sqrt(5^2-2.5^2)=4.33 (3 s.f.)
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