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jaybear97

  • one year ago

find the volume

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  1. jaybear97
    • one year ago
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  2. mathmate
    • one year ago
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    Ab is area of the base, which is an equilateral triangle with each side 8cm. Do you know how to find the area of an equilateral triangle?

  3. jaybear97
    • one year ago
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    isnt it like 3/4 s^2

  4. mathmate
    • one year ago
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    |dw:1433244541000:dw|

  5. jaybear97
    • one year ago
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    would it be 3.5 than?

  6. mathmate
    • one year ago
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    correction: =s*2s sqrt(3|dw:1433244718575:dw|

  7. mathmate
    • one year ago
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    So area of triangle = sqrt(3) s/2 * s/2 =sqrt(3) s/4

  8. mathmate
    • one year ago
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    * sqrt(3) s^2/4

  9. mathmate
    • one year ago
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    what does that give you for Ab?

  10. jaybear97
    • one year ago
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    i don't understand what to do for s^2/4

  11. mathmate
    • one year ago
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    s=8 cm = side of triangle. you multiply sqrt(3) by 8^2/4

  12. jaybear97
    • one year ago
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    3.5?

  13. mathmate
    • one year ago
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    8^2=64 8^2/4=16 Multiply that by sqrt(3) gives ?

  14. jaybear97
    • one year ago
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    27.7

  15. mathmate
    • one year ago
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    @Jaynator495 Now you need to find the height of the prism from the diagram, can you do that?

  16. mathmate
    • one year ago
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    @jaybear97 Now you need to find the height of the prism from the diagram, can you do that? @Jaynator495 Sorry, wrong tag, please ignore.

  17. jaybear97
    • one year ago
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    would the height be 19? @mathmate

  18. mathmate
    • one year ago
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    Yes, the height is 19 cm. (don't forget the units)

  19. jaybear97
    • one year ago
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    what do i do for the volume then? @mathmate

  20. mathmate
    • one year ago
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    The volume is obtained by multiplying the area of the base (Ab) and the height. You can use the calculator for that.

  21. jaybear97
    • one year ago
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    526.3/ @mathmate

  22. mathmate
    • one year ago
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    I have 526.54 if you use more accurate numbers for sqrt(3), such as 1.7321 (instead of just 1.73). Good job.

  23. Jaynator495
    • one year ago
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    You done goofed mathmate x'D

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