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richardlong369

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    area of shaded=area of large circle-area of small circle are of large circle=pi*R^2=pi(18)^2=324pi area of small circle=area of large circle-areae shaded pi*r^2=324pi-150pi pi*r^2=174pi r^2=174 r=13.9

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    Thankyou that helped a lot

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    :)

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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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