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22 April, 14:46

What is the surface area of a rectangular prism with a width of 15; length of 10; and height of 8.

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Answers (2)
  1. 22 April, 15:42
    0
    L = length = 10

    w = width = 15

    h = height = 8

    S = 2 [ lw + lh + hw ]

    plugging in the values ...

    S = 2 [ (10) (15) + (10) (8) + (8) (15) ]

    S = 2 [150 + 80 + 120]

    S = 2 [350]

    S = 700
  2. 22 April, 17:10
    0
    To find the smaller side of a rectangular prism on each end you must multiply the width and height:

    15*8=120

    Then you must times this by 2 because we have 2 of those sides (one on each end):

    120*2=240

    Then find the rectangular shape's surface area by multiplying the length and the height:

    10*8=80

    You must then multiply this by 4 as there are four of those sides:

    80*4=320

    Then add the two answers together to find the total surface area:

    320+240=560
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