Can someone please help on question 4?
I will give you brainliest

Answer:
The area of the right circular cone is:
Step-by-step explanation:
Given
Using the formula to determine the right circular cone
[tex]A\:=\:\pi r\:\left(r+\sqrt{h^2+r^2}\right)[/tex]
substituting h = 13, and r = 8.5
[tex]A\:=\:\pi \left(8.5\right)\:\left(8.5+\sqrt{\left(13\right)^2+\left(8.5\right)^2}\right)[/tex]
[tex]A=8.5\pi \left(8.5+\sqrt{241.25}\right)[/tex]
[tex]A = 642[/tex] cm²
Therefore, the area of the right circular cone is: