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Mathematics 11 Online
OpenStudy (dezandalf42714):

HELP?? The figure below is composed of eight circles, seven small circles and one large circle containing them all. Neighboring circles only share one point, and two regions between the smaller circles have been shaded. Each small circle has a radius of 5 cm.

OpenStudy (dezandalf42714):

one minute wile i grab the photo

OpenStudy (dezandalf42714):

OpenStudy (anonymous):

so what's the question

OpenStudy (dezandalf42714):

Sorrry I have to find the area of the large circle and the area of the shaded spot in between the bottom circles.

OpenStudy (anonymous):

The area of the large circle is \[225\pi \]

OpenStudy (anonymous):

cm

OpenStudy (dezandalf42714):

Can I ask how you got that? Because I followed the formula which is pi x radius squared and 225 is only radius squared right?

OpenStudy (dezandalf42714):

and I did 225 x pi which came out to be 706.86

OpenStudy (anonymous):

its more accurate if left as 225 pi

OpenStudy (dezandalf42714):

oh ok. What would you think the area of the shaded spot would be? I am stumped on that one.

OpenStudy (anonymous):

it's\[31\frac{ 4 }{ 6 }\pi \]

OpenStudy (dezandalf42714):

Ok Thanks A bunch!!

OpenStudy (anonymous):

no probs

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