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anonymous

  • 5 years ago

Can someone please please help me with some more surface area of pyramids and cones???

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  1. anonymous
    • 5 years ago
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    maybe i might be able to help little bit maybe

  2. anonymous
    • 5 years ago
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    take a screen shot of problem and upload it

  3. anonymous
    • 5 years ago
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    for this one i need to find the slant hight, lateral area, and the surface area

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  4. anonymous
    • 5 years ago
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    for this one i need to find the slant height

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  5. anonymous
    • 5 years ago
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    okay hold on sec

  6. anonymous
    • 5 years ago
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    okay on the slant height you use this formula =Lateral Area of a regular pyramid: ½ perimeter × slant height = 96 on this one

  7. anonymous
    • 5 years ago
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    because see tha base of it is got dotted line which means you take half of 16 = 8 and * that by 12 which gives us 96

  8. anonymous
    • 5 years ago
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    on frist one to get surface area use this formula Surface Area = Lateral Area + n × Bases.

  9. anonymous
    • 5 years ago
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    i should of put this at the top... they are multiple choice.. for the cone the choices are a) 20 b) 10.6 C08.9 d) 14.4 e)7.1

  10. anonymous
    • 5 years ago
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    well hummmmmmmm

  11. anonymous
    • 5 years ago
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    yeah sorry im trying to do like 5 things at once

  12. anonymous
    • 5 years ago
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    all good i am trying to do my math work and help others

  13. anonymous
    • 5 years ago
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    lol

  14. anonymous
    • 5 years ago
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    (25/4+144/4)^(1/2) = (169/4)^(1/2) = 13/2 (169/4+25/4)^(1/2) = 6.96 for side of pyramid

  15. anonymous
    • 5 years ago
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    6.96 for side of pyramid so would this be the slant height?

  16. anonymous
    • 5 years ago
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    ?, the side going from one of the bottom corners to the top.

  17. anonymous
    • 5 years ago
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    It's the longest side on the pyramid

  18. anonymous
    • 5 years ago
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    for the pyramid: the slant height choices are: a)4.5cm b)5.5cm c)6.5cm d)6cm e)7.8 for the lateral area choices are: a)57.5cm^2 b)65cm^2 c)32.5cm^2 d)78cm^2 e)90cm^2 for the surface area: a)57.5cm^2 b)65cm^2 c)32.5cm^2 d)78cm^2 e)90cm^2

  19. anonymous
    • 5 years ago
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    Ok, slant height is the height from the midpoint on the base to the top. So 6.5

  20. anonymous
    • 5 years ago
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    for SA, .5bh*4 + b^2 b=5, h=6.5 (5)(6.5)(2)+5(5) 90cm squared

  21. anonymous
    • 5 years ago
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    I'm guessing lateral area means without the base, so it's probably 65

  22. anonymous
    • 5 years ago
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    All you need to know to do these problems to use the Pythagorean theorem on Right triangles to find the missing side, and area of triangles is simply .5base times height.

  23. anonymous
    • 5 years ago
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