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anonymous

  • 5 years ago

http://img861.imageshack.us/i/page741.jpg/ Can some one help me please!

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  1. dumbcow
    • 5 years ago
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    For #20 volume of a cone is 1/3 volume of cylinder cylinder: V=pir^2*h cone: V = 1/3pi*r^2*h so 2/3 of the space is outside cone but inside cylinder #21 im not quite sure about what dimensions the numbers given in figure refer to?

  2. anonymous
    • 5 years ago
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    the base and the height of the cone is the same cylinder?

  3. anonymous
    • 5 years ago
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    20 is look the smae to me

  4. dumbcow
    • 5 years ago
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    yes, it says they share the same base and height

  5. anonymous
    • 5 years ago
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    21) I think the question is find volum a pyramid, I can fid it , but subtrac the cone it hard to tell how much the cone is overlap

  6. dumbcow
    • 5 years ago
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    it says the base of cone is inscribed in the square or base of pyramid so there is no overlap, its like the 2 bases are pressed together

  7. anonymous
    • 5 years ago
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    Can you show me how to find Volum?

  8. anonymous
    • 5 years ago
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    it mean find volum of cone?

  9. dumbcow
    • 5 years ago
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    ok volume of cone is 1/3*pi*r^2*h slant height = 12 all we need is the radius. do you know what the 8 and 10 refer to?

  10. anonymous
    • 5 years ago
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    the base is 10 square is mean radius square is 5 ? and use 5 to find Valume of cone?

  11. anonymous
    • 5 years ago
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    1/3*pi*5^2*h I know how to find the h

  12. dumbcow
    • 5 years ago
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    oh ok i see it now. yes you are correct just use pytharean theorem to get height

  13. anonymous
    • 5 years ago
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    12^2-5^2=10.9 the h of cone ,am I righ?

  14. dumbcow
    • 5 years ago
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    correct

  15. anonymous
    • 5 years ago
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    OK. thank

  16. dumbcow
    • 5 years ago
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    your welcome

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