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Mathematics 9 Online
OpenStudy (anonymous):

The surface area of a rectangular prism is 150 cm². If all the sides are tripled, what will the new surface area be? ive gotten up to here(18Lw + 18wh + 18Lh)/(2Lw + 2wh + 2Lh) = Area/150

OpenStudy (anonymous):

can someone just do this and i wanna see if i did it right

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