Kate89
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The formula for the area of a regular polygon is mc003-1.jpg. What is the equation solved for a?

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taskmasters
Area of a regular polygon is computed using this formula:

Area = (a * p) / 2
a = length of the apothem 
p = perimeter of the polygon

Using the above formula, we can derive the formula for a.

A = (a*p)/2
A*2 = a*p
(2A)/p = a     or     a = (2*A) / p

Just took the quiz.

The answer is a=2A/p

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