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12 March, 12:55

A box is 12 centimeters wide, 12 centimeters long, and 15 centimeters tall. What is the total surface area of 4 such boxes?

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  1. 12 March, 13:00
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    First you want to find the surface area of one box

    SA=2 (l*w) + 2 (h*l) + 2 (h*w)

    SA=2 (12*12) + 2 (15*12) + 2 (15*12)

    SA=2 (144) + 2 (180) + 2 (180)

    SA=288+360+360

    SA=1008 cm² is for one box

    Multiply by 4 to get for 4 boxes

    4*1008=4032 cm²
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