Question

Urgent Please Help!!! Last Project of the year and school ends today and I will fail Geometry . Can anyone help??

Answer 1

I have completed some of the project but, I am completely lost on the rest of it!

Answer 2

hi

Answer 3

We need to know what the project is. :)

Answer 4

yeah what is the projedct about

Answer 5

Hey! I am attaching it!

Answer 6

I am going to fail if this is not done by 11:59 :(

Answer 7

does anyone know how to do the rest of this??

Answer 8

@AmTran_Bus @agent0smith @Vocaloid

Answer 9

ok so i'm at the packaging shapes part

Answer 10

for cylinders and spheres, an example of a pro is that the volume is high compared to surface area

Answer 11

cones and pyramids...

Answer 12

hm.

Answer 13

any ideas for pros?

Answer 14

I completely lost and I am going to fail!

Answer 15

@Vocaloid is on fire!

Answer 16

Why did you wait till last minute?????????

Answer 17

can you think of any reasons why a pyramid or cone shape might be a good package idea?

Answer 18

I was working on other projects :(

Answer 19

No. Only that they would be easier to pour from

Answer 20

that's good!

Answer 21

you can write that

Answer 22

for cons, you could say that they can't be stacked

Answer 23

well not easily

Answer 24

Cones, Pyramids AND spheres can't be tightly packed

Answer 25

Okay thanks how about pros for those??

Answer 26

Cylinder and Sphere?

Answer 27

Sphere would be cheapest in terms of surface area to volume

Answer 28

well, pyramids and cones you mentioned before (pouring?)
spheres have high volume/surface area

Answer 29

I just went over cylinder at the beginning

Answer 30

So Sphere would be cheapest to make?

Answer 31

yes

Answer 32

now all that's left is triangular prisms and rectangular prisms

Answer 33

Yep for that part!

Answer 34

What about cube pro/con?

Answer 35

oh for cubes well

Answer 36

Cube con - inconvenient shape - doesn't stack well in store or at home - hard to hold with one hand.

Answer 37

pros for cube is high volume/surface area ratio

Answer 38

Thank Y'all How about Triangle Prism Pro/Con?

Answer 39

Triangle prism pro - doesn't fall over (if manufactured with a low height)

Answer 40

oh

Answer 41

oh right, triangles are actually more stable

Answer 42

Cool Thanks!! Help me pick one that would cost the least to make!

Answer 43

Look at this

Answer 44

In terms of cardboard cost sphere is cheapest

Answer 45

What measurements should I use on the sphere to equal the first part of the file I attached?

Answer 46

I am on the one right before the last question. Right above the net.

Answer 47

your volume was 240 inch^2

Answer 48

This shape must hold same amount of cereal but reduce costs.

Answer 49

Okay!

Answer 50

you solve 240 = a^3 for a

Answer 51

any ideas how?

Answer 52

sphere volume = (4/3) PI* r^3

Answer 53

her work sheet says she chose a cube though?

Answer 54

unless you wanna switch, that's ok too

Answer 55

Okay - sorry :-(

Answer 56

Will the cube be cheap also?

Answer 57

yes

Answer 58

the formula will be easier to calculate

Answer 59

also the cube won't roll away randomly

Answer 60

So what do I put in the second section that says Surface area? And Volume?

Answer 61

volume first

Answer 62

if 240 = a^3, what does a = ?

Answer 63

6.12?

Answer 64

6.21

Answer 65

That's what I meant to type.

Answer 66

the dimensions of a cube are equal so

Answer 67

6.21 is it

Answer 68

*6.21

Answer 69

for all

Answer 70

So I put that in the surface area box?

Answer 71

volume

Answer 72

not surface area

Answer 73

Surface area = 6*21*6.21*6

Answer 74

right

Answer 75

just to clarify

Answer 76

volume = 6.21^3 = 240
surface area = 6.21 * 6.21 * 6 = 231

Answer 77

now for the part where it says "Prove that your new design holds the same amount but can be manufactured more cheaply."

Answer 78

just show that the new surface area (231 inch^2 is less than the old surface area 292) but the volumes are both equal (240)

Answer 79

ready to keep going?

Answer 80

Yes I am!! You are a lifesaver!!! :)

Answer 81

the part where it says draw a net

Answer 82

Yes vocaloid has done quite well!!

Answer 83

a cube net looks like this

http://4.bp.blogspot.com/-bdqEC7TvRkk/TdEgNiJZl3I/AAAAAAAAAI4/wBBh03pF6Ro/s1600/CUBE_NET.jpg

Answer 84

What numbers do I put on it?

Answer 85

since all the sides are the same, just label each side 6.21

Answer 86

Oh My Goodness!! I will pass Geometry because of You!! :)