Answer:
Part 1) The lateral area is 
Part 2) The surface area is 
, 
Step-by-step explanation:
step 1
Find the lateral area of the cone
we know that
The lateral area of the cone is equal to

we have


substitute

step 2
Find the surface area of the cone
we know that
The surface area of the cone is equal to

we have


substitute

Answer:what are all the answers.sorry i cant see all the answers all i see is 80,and 160 degrees if there is a 360 degrees i would go with that one and my apologies if that answer was wrong.
Step-by-step explanation:
Answer:
congruent and perpendicular
Step-by-step explanation:
Answer: Second Option
C(8,8)=1
Step-by-step explanation:
We must calculate a combination
The combination 
Where n is the number of elements that you can combine and you choose "r" from them.
So
C (8, 8) is the combination of 8 in 8.
Therefore


The answer is the second option