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Q: What is the area of a regular pentagon with a radius of 7?

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== == The question does not make sense because the numbers are not consistent. It is a bit like asking the area of a circle if the radius is 6 and the diameter is 8. A circle's diameter is constrained to be twice the size of the radius. Similarly, the apothem of the specified pentagon is constrained to be a particular size and the apothem size is not 6.Also, a pentagon does not have a radius, so that part of the question does not make sense.Notes: * A previous version of the answer to this question on this site mentioned that the source of the solution is from www.icoachmath.com. However, there does not seem to be any pentagon area problems on that site. * A precise regular pentagon area is defined on the linked site:knol.google.com/k/scot-ellison/area-of-a-regular-pentagon

7

85.30

13

The surface area of a sphere with a radius of 7 is about 615.8 units2

The radius are 7 centimeters and the area are 153.93804002589985 square centimeters.

The area of a circle with a radius of 7 cm is: 153.9 cm2

An heptagon is a 7 sided pentagon. It can be irregular or regular.

7

The suface area of a sphere with a radius of 7 meters is 615.75m2

If the side length is 7, the perimeter is 35.

153.86

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