To find the total area of the rectangular bumper sticker, you can use the formula for the area of a rectangle, which is:
\[ \text{Area} = \text{Length} \times \text{Width} \]
Given that the length of the bumper sticker is 4.56 inches and the width is 2.3 inches, you can substitute these values into the formula:
\[ \text{Area} = 4.56 , \text{inches} \times 2.3 , \text{inches} \]
Calculating this:
\[ \text{Area} = 10.488 , \text{square inches} \]
Thus, the total area of the bumper sticker is \( \mathbf{10.488} \) square inches.