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Mathematics 8 Online
OpenStudy (anonymous):

when the apothem is 5 meters, the base is 3 meters, and the radius of the circle is 2.5 meters Find the area of the regular figure shown here

OpenStudy (anonymous):

OpenStudy (anonymous):

Do I just find the area of the green part?

OpenStudy (anonymous):

it says the area of the regular figure , but since the circle is included so i think we should find the area of this whole figure including the circle

OpenStudy (anonymous):

I'll post the choices just in case we need to check the answer and see

OpenStudy (anonymous):

A) 33.4 square meters B) 40.4 square meters C) 44.4 square meters D) 45.4 square meters

OpenStudy (anonymous):

area of the circle need not be included..

OpenStudy (anonymous):

really ? the question is not clear about this part , unfortunately :(

OpenStudy (anonymous):

the choices may help though

OpenStudy (anonymous):

hmmm maybe thats right? I'll have to calculate it and check the choices

OpenStudy (anonymous):

what does it mean by the apothem is 5 , is this the height?

OpenStudy (anonymous):

required area can be computed by calculating the sum of the 7 isoceles triangles and then subtracting the area of the inner circle from the sum

OpenStudy (anonymous):

they're 8 isolceles

OpenStudy (anonymous):

60 -19.6= 40.4 B) 40.4 square meters

OpenStudy (anonymous):

8 isosceles

OpenStudy (anonymous):

yes I got it B as well (1/2 * 3*5) *8 =60 and the area of circle is 19.625 by substracting we get 40.375 which is B

OpenStudy (anonymous):

@matricked thanks for your help

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