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Kitty [74]
2 years ago
7

A rectangular prism is completely packed with 63 cubes of edge length fraction 1/3 inch, without any gap or overlap. Which of th

ese best describes the volume of this rectangular prism?
2 unit cubes and 2 smaller cubes of volume fraction 1 over 27 cubic inch each
2 unit cubes and 9 smaller cubes of volume fraction 1 over 27 cubic inch each
4 unit cubes and 2 smaller cubes of volume fraction 1 over 27 cubic inch each
4 unit cubes and 3 smaller cubes of volume fraction 1 over 27 cubic inch each
Mathematics
1 answer:
vlada-n [284]2 years ago
6 0

The volume of the prism is a function of the cubes in it.

The volume of the prism is: <em>(b) 2 unit cubes and 9 smaller cubes of volume fraction 1 over 27 cubic inch each</em>

From the question, we have:

<em />n = 63<em> --- number of cubes</em>

<em />l = \frac 13<em> --- the edge length of each cube</em>

<em />

So, the volume of a cube is:

v = l^3

This gives

v = \frac 13^3

v = \frac 1{27}

The volume of the prism is then calculated as:

V = n \times v

This gives

V = 63 \times \frac 1{27}

V = \frac {63}{27}

Rewrite as:

V = \frac {54 + 9}{27}

Split

V = \frac {54}{27} + \frac{9}{27}

V = 2 + \frac{9}{27}

Rewrite as:

V = 2 + 9 \times \frac{1}{27}

The above equation means that, the volume of the prism is:

<em>(b) 2 unit cubes and 9 smaller cubes of volume fraction 1 over 27 cubic inch each </em>

<em />

Read more about volumes at:

brainly.com/question/13338592

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