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MA_775_DIABLO [31]
3 years ago
6

In the diagram, the radius of the outer circle is 2x cm and

Mathematics
1 answer:
hodyreva [135]3 years ago
8 0

Area shaded = Area big circle- Area of small circle;

200 pi= pi•(2x)^2 -pi•6^2;

200pi= pi•4x^2 -pi•36;

200pi=pi•4(x^2 -9) divide both sides by 4pi;

50=x^2 -9; So x=sqrt(59)~7.68cm

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