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alainabbyboo22 Group Title

Find the surface area of the figure below. A. 200 in2 B. 88 in2 C. 42.5 in2 D. 85 in2

  • one year ago
  • one year ago

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  1. alainabbyboo22 Group Title
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    • one year ago
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  2. alainabbyboo22 Group Title
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    am i doing the same thing as on the circle one ?

    • one year ago
  3. JakeV8 Group Title
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    Pretty much... no circles here though ;) You're the teacher here... what should we do first? (jk, I'll help)

    • one year ago
  4. alainabbyboo22 Group Title
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    lol i'd hope so ! cause otherwise i'll never be able to be the teacher . xD

    • one year ago
  5. alainabbyboo22 Group Title
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    pi * 9^2 ?

    • one year ago
  6. JakeV8 Group Title
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    Why pi? I don't see any circles in that diagram. What shapes are there?

    • one year ago
  7. alainabbyboo22 Group Title
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    oh .. well .. 9*4*4 ?

    • one year ago
  8. JakeV8 Group Title
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    I don't understand yet ;) It looks like you multiplied 9 * 4. Is that the area of a side of the shape?

    • one year ago
  9. alainabbyboo22 Group Title
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    i really don't understand this one . i have no idea what i have to do . ):

    • one year ago
  10. JakeV8 Group Title
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    What shape do you see on the sides of that pyramid?

    • one year ago
  11. alainabbyboo22 Group Title
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    triangles .

    • one year ago
  12. JakeV8 Group Title
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    Area of a triangle: = 1/2 * base * height You had the right idea of multiplying by four, though... there are four sides.

    • one year ago
  13. JakeV8 Group Title
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    So, for the four triangle sides, your area of each side will be 1/2 * 4 * 9 1/2 * 4 * 9 = 18 And there are 4 of those triangle sides, so 4 * 18 = 72 But you still need to add the area of the square base.

    • one year ago
  14. alainabbyboo22 Group Title
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    where do i go from there then ?

    • one year ago
  15. JakeV8 Group Title
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    what is the area of the bottom? The shape of the bottom is a square with sides 4...

    • one year ago
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