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April 11th, 2018, 06:18 AM   #1
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3D Shapes with algebra

I have tried doing this many times but I cannot find the distance from X to A. Please help!
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April 11th, 2018, 06:44 AM   #2
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What are you studying? You have asked three questions that seem quite unrelated. In any case, your diagram is too small for me to read.
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April 11th, 2018, 06:49 AM   #3
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Bigger diagram
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April 11th, 2018, 07:38 AM   #4
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The required area = the area of the "base" of the discarded cone = $\pi h^2\!$.
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April 12th, 2018, 04:38 AM   #5
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Quote:
Originally Posted by skipjack View Post
The required area = the area of the "base" of the discarded cone = $\pi h^2\!$.
Sorry, I don't fully understand, why $\pi h^2\!$?
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April 12th, 2018, 08:07 AM   #6
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The discarded cone is geometrically similar to the original cone so its height and base radius are equal. Its height is given as h, so its base radius is h.
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