Answer: [tex]\$29.7[/tex]
Step-by-step explanation:
Given
The trophy has a side of [tex]a=9\ in.[/tex]
Slant height [tex]l=11\ in.[/tex]
Rate of painting [tex]r=\$\ 0.15/in.^2[/tex]
Lateral surface area of square pyramid is [tex]2al[/tex]
Insert the values
[tex]\Rightarrow 2\times 9\times 11\\\Rightarrow 198\ in.^2[/tex]
Cost of painting
[tex]\Rightarrow 198\times 0.15=\$29.7[/tex]
