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Geometry 7 Online
OpenStudy (mrsbieberxxmine):

If the area of a regular decagon is about 492 cm2, what is the length of a side? Round to the nearest whole number

OpenStudy (mrsbieberxxmine):

no I have no idea

OpenStudy (dmezzullo):

Do you know how many sides a decagon has?

OpenStudy (mrsbieberxxmine):

yes 10

OpenStudy (dmezzullo):

So then divide 492 by 10 and round to the nearest whole number

OpenStudy (dmezzullo):

And don't forget the label

OpenStudy (mrsbieberxxmine):

oh thank you so much

OpenStudy (mrsbieberxxmine):

it says its 49.2 but the answer choices theirs no 49

OpenStudy (dmezzullo):

what are the choices?

OpenStudy (dmezzullo):

My bad. It should be 8.

OpenStudy (mrsbieberxxmine):

Oh okay the answer or the sides

OpenStudy (mrsbieberxxmine):

Thank you 🙂

OpenStudy (mrsbieberxxmine):

So i divied it by 8

OpenStudy (dmezzullo):

The answer is 8 cm2

OpenStudy (mrsbieberxxmine):

Oh okay now that is one of the answers thank you

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