Question

An hourglass consists of two sets of congruent composite figures on either end. Each composite figure is made up of a cone and a cylinder.
Each cone of the hourglass has a height of 15 millimeters. The total height of the sand within the top portion of the hourglass is 45 millimeters. The radius of both cylinder and cone is 6 millimeters. Sand drips from the top of the hourglass to the bottom at a rate of 10π cubic millimeters per second. How many seconds will it take until all of the sand has dripped to the bottom of the hourglass?

Answer 1

k

Answer 2

let me find the volume of the cone

Answer 3

I got 565.486 :/

Answer 4

for the cone

Answer 5

540 pi

Answer 6

and divide by 3

Answer 7

the area for a cone is 1/3 (pi)(radius squared)(height)

Answer 8

I mean the volume

Answer 9

so the cylinder must have a height of 30

Answer 10

the volume for a cylinder is 3392.92

Answer 11

The volume of the sand is 1080π + 180π = 1260π
It's letting the sand through at a rate of 10π cubic millimeters per second.
10π = 1260π/t
t = 126 seconds

Answer 12

How does the answer 126 look to you?

Answer 13

lol. Look up

Answer 14

k

Answer 15

unreal, my fingers are too cold to type that fast

Answer 16

lol.

Answer 17

20/20!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 18

YAY!

Answer 19

:D!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 20

...!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 21

Good work everyone!

Answer 22

Ohh... you forgot to answer my question earlier

Answer 23

Remember Gengar?

Answer 24

He knows the following attacks:
Shadow Ball
Psychic
Confuse Ray
Dark Pulse

Answer 25

I answered it before too.

Answer 26

i'll pay one of you to teach my nefue maths and i'll go take a nap:P

Answer 27

What pokemon would you use to beat Gengar?

Answer 28

I answered it before.

Answer 29

a. Caterpie

Answer 30

b. Metapod

Answer 31

c. Ratatta

Answer 32

or d. Weaville

Answer 33

what's good against psychic again?

Answer 34

WEAVILE

Answer 35

or e. Noctowl

Answer 36

I choose NOCTOWL!!!!!!!!!!!!!!!!!

Answer 37

Noctowl would own that boy with psychic

Answer 38

or hypnosis and then dream eater combo

Answer 39

Psychic is weak against bug, dark, and ghost I believe

Answer 40

right

Answer 41

Psychic isn't even affective against dark

Answer 42

ahh

Answer 43

Weavile is immune to psychic right?

Answer 44

I see now

Answer 45

yep

Answer 46

and dark is weak against him because he is dark

Answer 47

ghost is weak because the pokemon is dark

Answer 48

Yup...

Answer 49

http://stackoverflow.com/questions/2630645/is-there-a-pattern-for-this

Answer 50

but weaville only knew these moves:
string shot
slash
splash
I'm a firing my lasar!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 51

there you go

Answer 52

Weavile is unable to learn splash or string shot. You just put the most useless moves :P

Answer 53

And slash is useless against gengar...

Answer 54

I played the new pokemon, it sucks, where did the puzzles disappear to?

Answer 55

Yeah. The new ones aren't as good.

Answer 56

I only play the card game nopw

Answer 57

I use the new pokemon cards

Answer 58

All the challenge in video games are mostly gone these days in video games...

Answer 59

I've heard of simisear, simisage, and simipour?

Answer 60

Have you?

Answer 61

Yeah. The three monkeys

Answer 62

I use them

Answer 63

They boss

Answer 64

and I use Starmie

Answer 65

Though how can a Pokemon be a two-headed flying snowcone?

Answer 66

lol

Answer 67

here is the pic

Answer 68

I don't even know the new pokemon names, I jsut played it out of interest then realised blue and red will always be the best maybe yellow

Answer 69

the snowcone has more HP than the original Charizard!!!!!!!!!!!!!!!!!

Answer 70

lol. SOme of the new designs are just weird...

Answer 71

I still like the third generation the best: Ruby, Saphire, Emerald

Answer 72

Second Generation is the best to me

Answer 73

Hint Hint: NOCTOWL

Answer 74

http://bulbapedia.bulbagarden.net/wiki/Luvdisc_(Pok%C3%A9mon) yesssssssssssss lol

Answer 75

lol. Of course. Everyone has their favorites

Answer 76

LUVDISC!

Answer 77

I want a luvdisc

Answer 78

wait, let me open a Pokemon discussion board

Answer 79

hold up

Answer 80

My fav is Swampert or mudkip

Answer 81

You're gonna get in trouble because this is a tutoring website...

Answer 82

lol

Answer 83

http://technabob.com/blog/2010/06/16/gotta-nuke-em-all/

Answer 84

Woah...

Answer 85

winner lol