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(Solved): The regular pentagon shown has sides 7.4cm long. What is its area? Round to the nearest whole num ...

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The regular pentagon shown has sides

7.4 cm

long. What is its area? Round to the nearest whole number. (CCC Math 50: Use

A = n \cdot s \cdot r \div 2

or

A = n \cdot s \cdot 4 R^{2} - s^{2} \div 4

.)

cm^{2}

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The length of sides of a regular pentagon =
Distance from the center to vertex is
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