5Step-by-step explanation:
Answer:
The surface area of the cone
Step-by-step explanation:
The given figure is in the shape of a cone:

slant height(l)
Surface area of the cone
=
As, 
Surface area of the cone =


The surface area of the cone
Answer:
-2 < AC < 8
Step-by-step explanation:
The last side has to be less than the sum of the other 2 sides, or less than 8. The only answer choice with this is the 3rd one.
12 girls
You can divide 48 by 2 then divide the answer by 2, to get the answer.