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Math Help - pyramid

  1. #1
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    pyramid

    find the surface and the volume of the KABC pyramid in which two sides of the base and all the side legs are a. the angle between the base and side legs is x.

    sorry for the bad english!
    thanks
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  2. #2
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    pyramid

    Quote Originally Posted by blertta View Post
    find the surface and the volume of the KABC pyramid in which two sides of the base and all the side legs are a. the angle between the base and side legs is x.

    sorry for the bad english!
    thanks

    Hi blertta,

    There isn't enough information. Is ABC is a right triangle ?

    bjh
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  3. #3
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    no, thats not given
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  4. #4
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    i dont know if the center of the circle outwritten to the base is the point where KH touch the base because if yes these formulas might be useful a/sinx=2R and then R=abc/4S
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  5. #5
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    pyramid

    Quote Originally Posted by blertta View Post
    i dont know if the center of the circle outwritten to the base is the point where KH touch the base because if yes these formulas might be useful a/sinx=2R and then R=abc/4S
    Hello again blertta,

    Let's change x to 60 degrees. I believe that solves the problem. You do the calcs.

    bjh
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