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Mathematics 17 Online
OpenStudy (anonymous):

Math Help Please!!!!!!!!!!!!!!!!!! 2. What is the new volume of a rectangular prism that is originally 192 cubic meters and is then resized using a scale factor of one-quarter on each side length? 3 cubic meters 8 cubic meters 12 cubic meters 48 cubic meters

OpenStudy (kirbykirby):

When you re-scale a volume... the scale factor becomes cubed.

OpenStudy (anonymous):

ok so then how would you find the new volume?

OpenStudy (kirbykirby):

|dw:1372452758532:dw|

OpenStudy (anonymous):

192/ 1/4 = 48

OpenStudy (whpalmer4):

to be a little more precise, if you scale ALL of the dimensions of a volume, the scale factor is cubed.

OpenStudy (whpalmer4):

@Martinmelissa no, you need to multiply by (1/4)^3 because 1/4 is applied to each dimension. What you did was the same as if we kept the length and width the same, and scaled the height only by 1/4...

OpenStudy (kirbykirby):

^ true, it applies if all dimensions are scaled.

OpenStudy (anonymous):

what does ^ mean?

OpenStudy (kirbykirby):

oh just a way to refer to the previous post (like an "up" arrow)

OpenStudy (anonymous):

ok

OpenStudy (whpalmer4):

|dw:1372452971051:dw|

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