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anonymous

  • one year ago

what is the surface area of the rectangular prism. with a base of 7 lenghth of 6 hight of 12

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  1. anonymous
    • one year ago
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    plz help

  2. imqwerty
    • one year ago
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    |dw:1439743263291:dw|

  3. imqwerty
    • one year ago
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    so total surface area = sum of surface areas of all the sides

  4. anonymous
    • one year ago
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    no the 7 and 6 are switched around

  5. imqwerty
    • one year ago
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    ok

  6. anonymous
    • one year ago
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    multiply them all up or add them all up

  7. imqwerty
    • one year ago
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    |dw:1439743389160:dw|

  8. imqwerty
    • one year ago
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    so this figure has 6 faces

  9. anonymous
    • one year ago
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    so 6 times all numbers?

  10. imqwerty
    • one year ago
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    we need to find out the surface area of all of them and add all the surface areas

  11. anonymous
    • one year ago
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    25

  12. imqwerty
    • one year ago
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    formula for total surface area of a rectangular prism = 2(ab + bc +ca) where a, b , c are the side lengths :)

  13. anonymous
    • one year ago
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    okay i am kinda of confused? so i just in put the numbers?

  14. mathstudent55
    • one year ago
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    Here's another way of doing it. Find the area of the large rectangle which is 26 by 12. Then add the area of two bases which are 6 by 7 each. |dw:1439743555089:dw|