To find the surface area of a rectangular prism (like a textbook), you can use the formula:
\[ \text{Surface Area} = 2lw + 2lh + 2wh \]
where:
- \( l \) is the length,
- \( w \) is the width,
- \( h \) is the height.
For the given dimensions of the textbook:
- \( l = 14 \) in,
- \( w = 9 \) in,
- \( h = 2 \) in.
Now substituting these values into the formula:
\[ \text{Surface Area} = 2(14)(9) + 2(14)(2) + 2(9)(2) \]
Calculating each term:
- \( 2(14)(9) = 2 \times 126 = 252 \)
- \( 2(14)(2) = 2 \times 28 = 56 \)
- \( 2(9)(2) = 2 \times 18 = 36 \)
Now adding these values together:
\[ \text{Surface Area} = 252 + 56 + 36 = 344 , \text{in}^2 \]
Thus, the surface area of the textbook is \( \boxed{344 , \text{in}^2} \).