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The problem is asking for the surface area of a rectangular prism with the following dimensions:

- Length \( L = 14 \, \text{inches} \)
- Width \( W = 9 \, \text{inches} \)
- Height \( H = 4 \, \text{inches} \)

The formula for the surface area \( A \) of a rectangular prism is:

\[
A = 2(LW + LH + WH)
\]

Let's calculate it step-by-step:

1. \( LW = 14 \times 9 = 126 \, \text{in}^2 \)
2. \( LH = 14 \times 4 = 56 \, \text{in}^2 \)
3. \( WH = 9 \times 4 = 36 \, \text{in}^2 \)

Now sum these products and multiply by 2:

\[
A = 2(126 + 56 + 36) = 2(218) = 436 \, \text{in}^2
\]

So, the surface area of the rectangular prism is **436 square inches**.

Let me know if you'd like further explanation!

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Here are 5 related questions for practice:
1. What is the surface area of a rectangular prism with dimensions 10 in, 5 in, and 3 in?
2. How do you calculate the volume of a rectangular prism?
3. What happens to the surface area if the height of the prism is doubled?
4. Can a cube be considered a rectangular prism? Why or why not?
5. How would you calculate the diagonal of a rectangular prism?

**Tip**: Always double-check whether you are asked for surface area or volume. These are often confused in word problems.

A rectangular prism has dimensions with a length of 14 inches, a width of 9 inches, and a height of 4 inches. What is the surface area of the rectangular prism?

Learn how to calculate the surface area of a rectangular prism with a length of 14 inches, a width of 9 inches, and a height of 4 inches. The step-by-step solution explains the key formula used and provides insights into understanding surface area calculations for 3D shapes. Ideal for students in Grades 6-8.

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