Math Help - Find total surface area of cone...

1. Find total surface area of cone...

Question: find the total surface area of the ice cream cone (include external and internal surfaces.) Take pi = $22/7$

My solution: Basically what I did was to find slant height of both the internal and external cone and then evaluating it, find curved surface area for both internal and external + the circular area of the ice cream cone
Answer = $113.2$cm (Round off 1 decimal place)

Thanks

3. Re: Find total surface area of cone...

Originally Posted by emakarov