Find the surface area of this cone. Please help, I'm just stuck on one part of this question and I want to know what im doing wrong, thank you.

Question

anonymous · Answer

|dw:1407462417372:dw|

anonymous · Answer

For the base I got =64 
LA= I got 2376
SA=2440
but its wrong so idk what I did wrong

anonymous · Answer

A=πr(r+h2+r2)

anonymous · Answer

A=(3.14)(8)(8+19^2+8^2)
A=(3.14)(8)(8+361+64)
3.13(8)(8+425)
(3.14)(8)(433)
(25.12)(433)
         ?
Can you do it from here?

anonymous · Answer

that number seems extremely big to be the answer?

anonymous · Answer

(3.14)(8)(8+361+64)
(3.14)(64+2888+512)
(3.14(2888+576)
3.14(3400)

anonymous · Answer

oh wait when i copied the formula i didnt put in sqrt

anonymous · Answer

$$(3.14)(8)(8+\sqrt{361+64}$$

anonymous · Answer

$$(3.14)(8)(8+\sqrt{425}$$

anonymous · Answer

3016?

anonymous · Answer

(3.14))(8)(8+20.61)
3.14(64+164.9)
200.96+1319.2
1520.16

anonymous · Answer

that doesn't seem right

anonymous · Answer

(3.14)(8)(8+20.61)
25.12(8+20.61)
200.96+517.72
718.68

anonymous · Answer

is that the answer or do I plug that in and add that to the base?

anonymous · Answer

I used a calculator on google it said 719.19

anonymous · Answer

it was wrong :(

anonymous · Answer

719.19 or 718.68?

anonymous · Answer

the 719.19