Question

1. Find the area of a regular pentagon with a side length of 10 inches. ​

Answer 1

• 172.05

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Use the formula:

• 
  `Area = (1/4) * \sqrt{5(5 * 2 √(5)))} * s^2`, where s - side

Plugging in the side length::

• 
  `Area = (1/4) * \sqrt{5(5 + 2 √(5)))} * 10^2`
• 
  `Area=172.05\ rounded`