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anonymous

  • 5 years ago

two similar cones have heights 10 cm and 15 cm. Find the ratios of each of the following. a. The radii b. the surface areas of the cones c. the volume of the cones

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  1. anonymous
    • 5 years ago
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    All 'lengths' (i.e. height, radii) have the same ratio, let's call it k. All 'areas' have the ratio k^2. The volume has the ratio k^3.

  2. anonymous
    • 5 years ago
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    I dont get it

  3. anonymous
    • 5 years ago
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    15/10 = 3/2 or 3:2 ratio. Let this be 'k', and the results follow from above.

  4. anonymous
    • 5 years ago
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    ok.

  5. anonymous
    • 5 years ago
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    how do you find the radi when it only gives me the heigt

  6. anonymous
    • 5 years ago
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    You don't need to find the radii, only their ratio. As they are similar, the ratio of the radii is equal to the ratio of the heights.

  7. anonymous
    • 5 years ago
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    so the radii would be 3/2

  8. anonymous
    • 5 years ago
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    The RATIO of the radii is 3/2 or 3:2, yes.

  9. anonymous
    • 5 years ago
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    When I have to do the equation its pie r s + pie r2 what do i subsstitue fro r

  10. anonymous
    • 5 years ago
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    You can't do that. And you don't need to. It is really as simple as my first reply.

  11. anonymous
    • 5 years ago
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    My teacher didnt teach me that way, to me that method is coufusing idk how to find the surface area and volume

  12. anonymous
    • 5 years ago
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    You CANNOT find them explicitly. The description of 'height 10' could be any cone with any radius.

  13. anonymous
    • 5 years ago
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    so how do i find the s.a and volume

  14. anonymous
    • 5 years ago
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    The ratio of the SA = (3/2)^2 = 9/4 The ratio of the Volume = (3/2)^2 = 27/8 You CANNOT find the exact SA/volume.

  15. anonymous
    • 5 years ago
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    K THNX can you helop me on my othere question

  16. anonymous
    • 5 years ago
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    two similar pyramids have volumes 3 in3 and 375 in3. find the ratios of each of the following. a. the heights of the pyramids b the lateral areas of the pyramids c. the surface areas of the pyramids

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