Answer:
[tex]94.2m^2[/tex]
Step-by-step explanation:
The formula for SA of a cone is...
[tex]\pi (r)(h)+\pi (r)^2[/tex]
Fill in what you have
[tex]\pi (3)(7)+\pi (3)^2[/tex]
Pi is 3.14 for our purposes
[tex]\pi (3)(7)+\pi (3)^2\\3.14(3)(7)+3.14(3)^2[/tex]
Then solve
[tex]21(3.14)+9(3.14)\\\\94.2m^2[/tex]
