andrea52 andrea52

18-05-2016
Mathematics

Answered

Find the area of a regular pentagon with radius 9mm

Verified Answer :

vince876 vince876

31-05-2016

The area is calculated by using the formula A=(r^2)nsin(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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