Question

What is the surface area of the prism? Length: 15mm Width: 3mm Height: 4mm

Answer 1

234 millimeters^2 is your answer

Answer 2

The answer is:  " 234 mm² " .
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Explanation:
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This would refer to a rectangular prism that has 6 (SIX) sides.

The formula for the surface area for a rectangular prism is:

Surface area:  2ab + 2bc + 2ac ;

In which, Given the length, width, and height of the prism; 
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a = length of one of the three dimensions; 
b = length of one of the three dimensions (one of the remaining two                                                            dimensions not used to be represented by "a"); 
c = length of one of the three dimensions (the remaining dimension that is not                                            already represented by "a" or "b" ; 
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Given:
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Length:  15 mm ;
Width:      3 mm ;
Height:     4 mm ;
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Let:  a = 15 mm ; 
        b =   3 mm ;
        c =   4 mm ;
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Since the formula for the surface area of a rectangular prism is:
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   Surface area:  2ab + 2bc + 2ac ;
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           We can solve for the surface area by plugging in our given values:
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Surface area: = 2(15mm)*(3mm)  +  2(3mm)*(4mm) + 2(15mm)*(4mm) ;
    
                       =   90 mm²    +   24 mm²   +   120 mm²  ;
 
                       =   234 mm² .
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