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The width, length, and height of a rectangular prism are each increased by 10%. What is the percent increase in the surface area of the prism? Express your answer to the nearest whole number.

 Apr 4, 2022
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area = 2 ( l*w  +  w*h  + h* l )     now increase the measurments

           2 ( 1.1 l * 1.1w + 1.1 w + 1.1h + 1.1h* 1.1 l )

           2 ( 1.21) ( l*w + w*h + h*l)                                      <=======   a 21% increase

 Apr 4, 2022

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