Find the area of a regular pentagon with radius 9mm

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18-05-2016
Mathematics

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Find the area of a regular pentagon with radius 9mm

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vince876 vince876 · Answer 1 · 2016-05-31T15:59:57+02:00

vince876 vince876

31-05-2016

The area is calculated by using the formula A=(r^2)*n*sin(360/n)/2 where n is the number of sides which is 5 for pentagon and r is the radius which is 9 mm. So, using the formula, the answer is 51.4 mm^2.

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