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anonymous

  • one year ago

A square pyramid is shown. What is the surface area? A square based pyramid, with bases labeled 3.5 centimeters and side length of triangle labeled 7 centimeters. 19.25 cm2 30.625 cm2 49.625 cm2 61.25 cm2

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  1. anonymous
    • one year ago
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    MEDAL AND FAN

  2. anonymous
    • one year ago
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    @amoodarya @ElonaSushchik @welshfella @ispike

  3. anonymous
    • one year ago
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    do you know what the formula is?

  4. anonymous
    • one year ago
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    • 1/3 × [Base Area] × Height

  5. anonymous
    • one year ago
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    Yes 3.5

  6. welshfella
    • one year ago
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    1/3 * base area * height is the volume of the pyramid not the surface area

  7. anonymous
    • one year ago
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    So whats the answer? @welshfella

  8. welshfella
    • one year ago
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    area of base = 3.5^2

  9. welshfella
    • one year ago
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    = the areas of the 4 triangles

  10. welshfella
    • one year ago
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    plus area of 4 triangles

  11. welshfella
    • one year ago
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    |dw:1436555028062:dw|

  12. welshfella
    • one year ago
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    |dw:1436555324836:dw|

  13. welshfella
    • one year ago
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    the area of the triangle = 0.5*3.5* height height = sqrt(7^2 - 1.75^2) multiply the area by 4 and add it to 3.5^2 for the answer

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