Question

someone please help.. i don't understand. >_<

Answer 1

you got it right

Answer 2

I'm using the right formula but my answer is not in any of the choices I just guessed that

Answer 3

its pie r squared right for the circle?

Answer 4

sorry 2 pie r squared + 2 pie r h

Answer 5

i got c

Answer 6

162 pie + 36 pie

Answer 7

where did you get 36? Cause i got 113.04

Answer 8

2 pie r squared= 162 pie
2(h) times 9(r) = 18
18 times 2(in the formula)= 36 pie

Answer 9

i'm so confused, cause i thought the formula is 2 pied r h for the second one

Answer 10

it is

Answer 11

why did I get 113.04?

Answer 12

u multiplied the pie to 36.. you don't

Answer 13

you don't? why not?

Answer 14

they are like terms with both pie so you don't have too. If the first number didn't have the pie, then you have to multiply the pie to 36 for the second to add to the first one.
Get it?

Answer 15

Not really.. i'll give you another example

Answer 16

so thats pied 8 squared + pied (15)(8) ?

Answer 17

SA=pie r s + pie r squared
SA=pie815+pie 8 squared
SA=120 pie + 64pie
SA=184 pie

Answer 18

Get it?

Answer 19

yeah thank you

Answer 20

No problem