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Mathematics 8 Online
OpenStudy (petlovers123):

A rectangular prism is completely packed with 180 cubes of edge length fraction 1/3 inch, without any gap or overlap. Which of the following describes the volume of this rectangular prism? 19 unit cubes and 9 smaller cubes of volume fraction 1/27 cubic inch each 19 unit cubes and 27 smaller cubes of volume fraction 1/27 cubic inch each 6 unit cubes and 6 smaller cubes of volume fraction 1/27 cubic inch each 6 unit cubes and 18 smaller cubes of volume fraction 1/27 cubic inch each

OpenStudy (petlovers123):

please help me

OpenStudy (petlovers123):

@freckles

OpenStudy (wwhitlock):

looks like math. Also looks like I will be no help to you here.

OpenStudy (petlovers123):

can anyone else please help me

OpenStudy (petlovers123):

will fan,medal,and write testimonal

OpenStudy (jdoe0001):

I was wondering myself what a "unit cube"

OpenStudy (freckles):

i was think a unit cube was a 1 by 1 by 1 I don't know what the smaller cube thing is... I guess they are talking about the 1/3 by 1/3 by 1/3 thingy

OpenStudy (jdoe0001):

right... was thinking along those lines

OpenStudy (petlovers123):

A unit cube, more formally a cube of side 1, is a cube whose sides are 1 unit long. The volume of a 3-dimensional unit cube is 1 cubic unit, and its total surface area is 6 square units. -google

OpenStudy (jdoe0001):

well.... you don't happen to have a picture of the prims, do you?

OpenStudy (petlovers123):

no sry thats all of the question

OpenStudy (jdoe0001):

but you know it looks like -> https://rossellacoletto.files.wordpress.com/2012/11/rubiks-cube.jpg kinda short from that, is not a cube, is just a rectangular prism

OpenStudy (petlovers123):

yes just recangular

OpenStudy (jdoe0001):

ok.... so... each of the small cubes have a side of 1/.3 notice, the small cubes are actually, "cubes", so what would be the volume of one of those small ones?

OpenStudy (petlovers123):

1/3

OpenStudy (thecalchater):

no 1/3^3 is what?

OpenStudy (jdoe0001):

1/3^3? where did that come from?

OpenStudy (petlovers123):

I was about to say what is that

OpenStudy (jdoe0001):

well, yes, but the small ones look like |dw:1456442709763:dw| so... what would be the volume of a cube like that then?

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