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mpj4

  • one year ago

Solid Mensuration: Circles: A clue would suffice, please help.

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  1. mpj4
    • one year ago
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  2. Astrophysics
    • one year ago
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    @ganeshie8 loves geometry!

  3. phi
    • one year ago
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    |dw:1438267193917:dw|

  4. phi
    • one year ago
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    we can write a few equations. the radius of the big circle is 9+x and y+5 so y=x+4 the diameter of the small circle is x + the radius of the big circle or x+x+9 = 2x+9 the radius of the small circle is r= (2x+9)/2 finally we can use pythagoras on the small triangle in the small circle (r-x)^2 + y^2 = r^2 that is enough info to solve for the difference in area between the two circles

  5. Astrophysics
    • one year ago
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    Haha phi, you did it just the way I was thinking xD, awesome as always!

  6. mpj4
    • one year ago
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    Thank you phi! I couldn't see that.

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