Answer:
[tex]SA = 70\pi[/tex]
Step-by-step explanation:
Given
See attachment for cone
Required
The total surface area
This is calculated as:
[tex]SA = \pi r\² + \pi rl[/tex]
From the attached cone:
[tex]r = 5[/tex] -- radius
[tex]l = 9[/tex] --- slant height
So, we have:
[tex]SA = \pi * 5^2 + \pi * 5*9[/tex]
[tex]SA = 25\pi + 45\pi[/tex]
[tex]SA = 70\pi[/tex]
