Question

can anyone please help with a few geometry problems?

Answer 1

find the lateral area and surface area. round to the nearest tenth.

Answer 2

we already got the surface area right?

Answer 3

\[S.A.=\pi \times r(r+\sqrt{h ^{2}+r ^{2}})\]Then, just find the are of the circle and subtract that to get the lateral area.

Answer 4

is the height 24?

Answer 5

Now that you mention it, I don't know if that is the slant height or regular height.

Answer 6

thats why i was confused

Answer 7

cause i thought the height was like measured righ thought the middle top to bottom

Answer 8

i also got 520.47 using that as the height and its not one of my answer choices

Answer 9

Yeah, well let's call it the slant height. If that is the slant height, then the regular height is about 21.33

Answer 10

so 475.54?

Answer 11

64****

Answer 12

For what, the surface area?

Answer 13

yeah

Answer 14

That's pretty off. What are your answer choices for surface area.

Answer 15

my radius is 5.5 though right? or is it 11 and it'd be 1209.49

Answer 16

yeah thats what it is lol oopss

Answer 17

i thought 11 was the diameter

Answer 18

diameter is the entire line

Answer 19

Yeah, 11 is the radius. I got 1208.77 for the surface area, so close enough.

Answer 20

Now find the lateral area.

Answer 21

i dont know how!! is there a formula for it

Answer 22

Do you know the formula for the area of a circle.

Answer 23

I have to go, but find the area of the circle and subtract it from the surface area, then you get the answer.

1208.77-area of circle= lateral area

Answer 24

okay thanks !

Answer 25

380.1 ???

Answer 26

I'm back for a minute.

Yes, 379.94, so:

1208.77-379.94=?

Answer 27

828.83

Answer 28

Yes.

So:

Surface Area: 1208.77
Lateral Area: 828.83

Answer 29

thanks for helping!!

Answer 30

your welcome. :)