Question

Gina stores her toys in a container which has a cylindrical body and a conical lid, as shown below.

She wants to cover the entire exterior portion of the container with paper. How much paper, in square feet, would Gina need?

28 π

16π

20π

24 π

Points earned on this question: 0

Answer 1

tips?

Answer 2

Do it one step at a time. What's the surface area of the cylinder? (not including the base)

Answer 3

hmm

Answer 4

3 pi plus pi?

Answer 5

cause (pi)(r)(h) + (pi)(r squared)

Answer 6

3pi +pi

Answer 7

4 pi

Answer 8

First, \(r=2\).
Second, it's \(2\pi r h+\pi r^2\).

Answer 9

ahh

Answer 10

12 pi +4 pi

Answer 11

16 pi

Answer 12

2 times 2

Answer 13

4 pi

Answer 14

Right. Now we need to find the surface area of the cone at the top. Do you know the formula for this?

Answer 15

2 times 2

Answer 16

4 pi + 4 pi + 16 pi=24 pi

Answer 17

24 π

Answer 18

right?

Answer 19

Why do you have two \(4\pi\)'s in there?

Answer 20

well

Answer 21

the surface area of the cone is 8 pi

Answer 22

so 8 pi +16 pi=24 pi

Answer 23

and

Answer 24

pi(2)(2) plus pi(2 squared)

Answer 25

Explain to me where you got the 8pi from. Remember that we don't include the base of the cone since it's contained within the solid.

Answer 26

ehh

Answer 27

so its 20 pi

Answer 28

so yo udon't apply the whole suface area

Answer 29

so its pi(r)(l)

Answer 30

Precisely.

Answer 31

ty

Answer 32

next problem

Answer 33

I'll only do three more with ya