Math Problem Statement

Find the surface area of the rectangular prism with dimensions 4 yards by 3 yards by 2 yards.

Solution

To find the surface area of a rectangular prism, we use the formula:

Surface Area=2lw+2lh+2wh\text{Surface Area} = 2lw + 2lh + 2wh

Where:

  • ll is the length,
  • ww is the width, and
  • hh is the height.

From the image:

  • Length l=4ydl = 4 \, \text{yd},
  • Width w=3ydw = 3 \, \text{yd},
  • Height h=2ydh = 2 \, \text{yd}.

Now, applying these values to the formula:

Surface Area=2(43)+2(42)+2(32)\text{Surface Area} = 2(4 \cdot 3) + 2(4 \cdot 2) + 2(3 \cdot 2)

Let's compute each part: 2(43)=212=242(4 \cdot 3) = 2 \cdot 12 = 24 2(42)=28=162(4 \cdot 2) = 2 \cdot 8 = 16 2(32)=26=122(3 \cdot 2) = 2 \cdot 6 = 12

Adding them together:

24+16+12=52yd224 + 16 + 12 = 52 \, \text{yd}^2

Thus, the surface area of the rectangular prism is:

52yd2\boxed{52 \, \text{yd}^2}

Would you like more details or have any questions?

Here are 5 related questions to explore:

  1. How do you find the volume of a rectangular prism?
  2. What is the difference between surface area and volume?
  3. How does changing one dimension of a prism affect its surface area?
  4. How can the formula for surface area be applied to different shapes?
  5. Why do we multiply each face area by 2 in the surface area formula?

Tip: Always ensure the units are consistent when calculating surface area or volume to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Geometry
Surface Area
3D Shapes

Formulas

Surface Area of Rectangular Prism = 2lw + 2lh + 2wh

Theorems

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Suitable Grade Level

Grades 6-8