Answer:
518 square inches
Explanation:
Surface area of a prism is expressed as;
[tex]SA\text{ = 2(lw+wh+lh)}[/tex]
l is the length = 8in
w is the width = 11in
h is the height = 9in
Substitute into the formula;
[tex]\begin{gathered} SA\text{ = 2\lbrack(8}\cdot11\text{)+(11}\cdot9\text{)+(8}\cdot9\text{)\rbrack} \\ SA\text{ =2\lbrack{}88+99+72\rbrack} \\ SA\text{ = 2(}259\text{)} \\ SA\text{ = }518in^2 \end{gathered}[/tex]
Hence the surface area of the prism is 518 square inches
