SOLUTION: using the pythagorean theorem find the area of an equilateral triangle whose side measures 7 units find the area to the nearest tenth of a square unit

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Question 1064546: using the pythagorean theorem find the area of an equilateral triangle whose side measures 7 units find the area to the nearest tenth of a square unit
Answer by josgarithmetic(39617) About Me  (Show Source):
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Form one altitude. This creates two congruent right triangles having each a leg 7%2F2 and a hypotenuse 7. The other leg is the size of the altitude. Find the size of this altitude, or height, using Pythagorean Theorem formula.

From that,.... refer to formula for area of a triangle.
a for altitude, b for base, area is %281%2F2%29ba.