Calculate Volume: Combining Two Prisms of 6×7×3 and 3×5×4 Meters

Question

The dimensions of the prism 1 are 6,7,3 meters.

From two orthohedra of the same size we build the body in the first drawing

The dimensions of the prism 2 are 3,5,4 meters.

From two orthohedra of the same size we build the body in the second drawing.

Glue the two figures together and find the volume of the resulting body.

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Video Solution

Solution Steps

00:00 Calculate the volume of the shared body
00:03 We'll use the formula for calculating box volume
00:07 height times length times width
00:11 We'll substitute appropriate values and solve for the volume
00:15 This is box 1 volume, now let's find box 2 volume the same way
00:19 We'll substitute appropriate values and solve for box 2 volume
00:24 This is box 2 volume
00:29 Now we'll multiply each volume by the appropriate number of boxes and sum
00:46 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Calculate the volume of one prism of each type using the formula for volume: Volume=length×width×height \text{Volume} = \text{length} \times \text{width} \times \text{height} .
  • Step 2: Multiply each result by two since two identical prisms form each body.
  • Step 3: Sum the volumes of the two bodies to get the total volume of the combined structure.

Now, let's work through each step:

Step 1: Calculate the volume of Prism 1:
For Prism 1 with dimensions 6m×7m×3m6 \, \text{m} \times 7 \, \text{m} \times 3 \, \text{m}, the volume is:

Volume of one Prism 1=6×7×3=126m3\text{Volume of one Prism 1} = 6 \times 7 \times 3 = 126 \, \text{m}^3.

Step 2: Since the body is made from two Prism 1 structures, multiply by 2:

Total Volume of first body=2×126=252m3\text{Total Volume of first body} = 2 \times 126 = 252 \, \text{m}^3.

Step 3: Calculate the volume of Prism 2:
For Prism 2 with dimensions 3m×5m×4m3 \, \text{m} \times 5 \, \text{m} \times 4 \, \text{m}, the volume is:

Volume of one Prism 2=3×5×4=60m3\text{Volume of one Prism 2} = 3 \times 5 \times 4 = 60 \, \text{m}^3.

Since the second body is made from two Prism 2 structures, multiply by 2:

Total Volume of second body=2×60=120m3\text{Total Volume of second body} = 2 \times 60 = 120 \, \text{m}^3.

Finally, add the two total volumes together to find the volume of the combined structure:

Total Volume=252+120=372m3\text{Total Volume} = 252 + 120 = 372 \, \text{m}^3.

Therefore, the volume of the resulting body is 372m3 372 \, \text{m}^3 .

Answer

372 372