Examples with solutions for Volume of a Orthohedron: How many times does the shape fit inside of another shape?

Exercise #1

Shown below is a large cuboid with a small cuboid inside it.

AB=13AC AB=\frac{1}{3}AC

AD=13AE AD=\frac{1}{3}AE

BF=13CK BF=\frac{1}{3}CK

How many times does the small cuboid fit into the large cuboid?

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Video Solution

Step-by-Step Solution

To solve this problem, we'll calculate the volumes of both cuboids:

  • Step 1: Determine the volume of the larger cuboid
  • Step 2: Determine the volume of the smaller cuboid
  • Step 3: Calculate how many smaller cuboids fit inside the larger cuboid

Now, let's work through each step:
Step 1: Let the dimensions of the larger cuboid be (L,W,H)(L, W, H). The volume is Vlarge=L×W×H V_{large} = L \times W \times H .
Step 2: The dimensions of the smaller cuboid are (L3,W3,H3)\left(\frac{L}{3}, \frac{W}{3}, \frac{H}{3}\right). Thus, the volume is Vsmall=L3×W3×H3=L×W×H27 V_{small} = \frac{L}{3} \times \frac{W}{3} \times \frac{H}{3} = \frac{L \times W \times H}{27} .
Step 3: To find the number of smaller cuboids that fit inside the larger cuboid, divide the larger volume by the smaller volume:
VlargeVsmall=L×W×HL×W×H27=27 \frac{V_{large}}{V_{small}} = \frac{L \times W \times H}{\frac{L \times W \times H}{27}} = 27

Therefore, the number of times the smaller cuboid fits into the larger cuboid is 27.

Answer

27

Exercise #2

Shown below is a large cuboid with a smaller cuboid inside of it.

AB=18AC AB=\frac{1}{8}AC

BF=18CG BF=\frac{1}{8}CG

AD=18AE AD=\frac{1}{8}AE

How many times does the small cuboid fit inside the larger cuboid?

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Video Solution

Step-by-Step Solution

To solve this problem, we need to determine how many smaller cuboids fit into the larger cuboid given that each side of the smaller cuboid is one-eighth the length of the corresponding side of the larger cuboid.

First, let's calculate the scaling effect on volume:

  • The length AB AB of the smaller cuboid is 18 \frac{1}{8} of length AC AC of the larger cuboid.
  • The width BF BF of the smaller cuboid is 18 \frac{1}{8} of width CG CG of the larger cuboid.
  • The height AD AD of the smaller cuboid is 18 \frac{1}{8} of height AE AE of the larger cuboid.

The volume of a cuboid is given by multiplying its three dimensions (length, width, and height). Thus, the volume of the smaller cuboid is:

(18×AC)×(18×CG)×(18×AE) \left(\frac{1}{8} \times AC\right) \times \left(\frac{1}{8} \times CG\right) \times \left(\frac{1}{8} \times AE\right)

=18×18×18×(AC×CG×AE) = \frac{1}{8} \times \frac{1}{8} \times \frac{1}{8} \times (AC \times CG \times AE)

=183×(volume of the larger cuboid) = \frac{1}{8^3} \times (\text{volume of the larger cuboid})

=1512×(volume of the larger cuboid) = \frac{1}{512} \times (\text{volume of the larger cuboid})

Therefore, the volume of the smaller cuboid is 1512 \frac{1}{512} of the larger cuboid's volume. This indicates that:

512 512 smaller cuboids fit into the larger cuboid.

Therefore, the number of times the small cuboid fits inside the larger cuboid is 512.

Answer

512

Exercise #3

Shown below is a small cuboid inside a larger cuboid.

AB = DF

BE = FG

AC=14AD AC=\frac{1}{4}AD

How many times the small cuboid can fit inside the large cuboid?

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Video Solution

Step-by-Step Solution

To solve this problem, the approach involves determining the volume of each cuboid and assessing how many times the volume of the small cuboid fits into the volume of the large cuboid.

Step-by-step solution:

  • First, note the relationships: AB=DF AB = DF , BE=FG BE = FG , and AC=14AD AC = \frac{1}{4} AD . These indicate equivalent heights and widths but differing lengths.
  • The sides of the larger cuboid can be assumed as follows for simplification: If AD=4x AD = 4x , then AC=x AC = x . Since AB=DF AB = DF and BE=FG BE = FG , widths and heights remain the same for both cuboids.
  • The volume of the larger cuboid can be given as: Vlarge=(4x)×w×h V_{\text{large}} = (4x) \times w \times h .
  • The volume of the smaller cuboid can be given as: Vsmall=x×w×h V_{\text{small}} = x \times w \times h .
  • The ratio of volumes then is VlargeVsmall=(4x)×w×hx×w×h=4\frac{V_{\text{large}}}{V_{\text{small}}} = \frac{(4x) \times w \times h}{x \times w \times h} = 4.

Therefore, the smaller cuboid can fit into the larger cuboid 4 times.

The correct answer is 4.

Answer

4