Answer :
Answer:[tex]undefined[/tex]Explanations:
The surface area of a square based pyramid is given by the formula:
[tex]\begin{gathered} A\text{ = }a^2+2a\sqrt[]{\frac{a^2}{4}+h^2}^{} \\ \text{Where a = base edge } \\ h\text{ = lateral height} \end{gathered}[/tex]From the question:
a = 8 feet
h = 9 feet
Substitute the values of a and h into the given formula for surface area:
[tex]\begin{gathered} A=8^2+2(8)\sqrt[]{\frac{8^2}{4}+9^2} \\ A\text{ = 64 + 16}\sqrt[]{\frac{64}{4}+81} \\ A\text{ = 64 + 16}\sqrt[]{16+81} \\ A\text{ = 64+16}\sqrt[]{97} \\ A\text{ =}64+157.58 \\ A\text{ = }221.58ft^2 \end{gathered}[/tex]