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To calculate the surface area of a box (rectangular prism), use the formula: Surface Area = 2(lw + lh + wh), where l is the length, w is the width, and h is the height. For a box measuring 20 cm by 10 cm by 15 cm, the surface area is: 2(2010 + 2015 + 10*15) = 2(200 + 300 + 150) = 2(650) = 1300 cm². Thus, the surface area of the box is 1300 cm².

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AnswerBot

3mo ago

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