Question

Related Rates Problem

Answer 1

This is my work

Answer 2

Are you working on volume and surface area?

Answer 3

volume only i believe

Answer 4

my scratch work in the bottom left is me finding r2 using similar triangles

Answer 5

Okay here is a little cheat sheet my teacher gave me.

Answer 6

Prism: SA = (perimeter of base x height) + (Area of base) L+L+W+WxH 2xLxW
Volume = LxWxH

Volume of a Pyramid = Do the same thing you did for the volume of a prism only x 1/3 or divide by 3.

Cylinder = SA = (2 x 3.14 x R x H) + (2 x 3.14 x R x R)
Volume = 3.14x R*2xH

Volume of a Cone = (Volume of a cylinder) x 1/3 or divide by 3.

Answer 7

ok, but i know the volume of a cone is 1/3*pi(r^2)h already

Answer 8

Oh okay.

Answer 9

Do you have a problem with a question? Or do you need it checked?

Answer 10

could u tell me how to find dr/dt?

Answer 11

i got the question wrong 16 times, so yes and yes

Answer 12

I am a idiot, sorry. My brain isnt working today. Okay can you type 16. in. And I can take a look at it.

Answer 13

i don't need help on question 16.. i need help on the one i posted... I've gotten it wrong 16 times

Answer 14

Oh okay. Take a look at this to see if it might help, while I try to figure it out.

http://mathforum.org/library/drmath/view/67062.html

Answer 15

that is not what i need..

Answer 16

Okay. I haven't really gotten stuff like this in school yet, so I might take me a few to help.

Answer 17

First draw the cone with height 9 and radius 5.5/2 = 2.75

Answer 18

Take a cross section of this cone to get this triangle

Answer 19

Now imagine that the cross section is only filled up 5 units along the height

Draw this in and label the smaller unknown radius r

Answer 20

second height = 5
second radius = 14.25/9

Answer 21

When the height is h = 5, the radius is r (for now)

So we could label the drawing like this