Janine made a cylindrical vase in which the sum of the lateral area and area of one base was about 3000 square centimeters. The vase had a height of 50 centimeters. Find the radius of the vase. Explain the method you would use to find the radius.

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anonymous · Answer

He called you out outkast

anonymous · Answer

who called me out?

anonymous · Answer

what are u talking about

anonymous · Answer

@Directrix

anonymous · Answer

direct please be my fan! I follow back!

directrix · Answer

Are we working math problems here or having a fight? I am here for the math and if that is not happening, I'm moving on to another problem.

anonymous · Answer

is this right
3000=( 2*Pi*r*h)+Pi*r^2
3000= (2*Pi*r*50) +Pi*r^2
3000=100Pir+Pir^2
3000=Pir(100+r)

anonymous · Answer

Nah man

anonymous · Answer

but i don't know how to continue

directrix · Answer

Does the answer need to be exact or will an approximation do? It's quadratic formula  to solve for r.  @malkassir

anonymous · Answer

yeah thnx man

directrix · Answer

I think I missed an "r." You did great on the equation.

directrix · Answer

Here's the Wolf's approximations.

directrix · Answer

http://www.wolframalpha.com/input/?i=pi+r%5E2+%2B+100+pi*r+-+3000+%3D+0

anonymous · Answer

this is so great
thank u

directrix · Answer

I might stop here:

3000=100Pir+Pir^2
pi r^2 + 100 pi r - 3000 = 0

It appears that we will need to factor or use the quadratic formula to get r.

directrix · Answer

Glad to help. Check my calculation. You did the heavy work getting the equation written.

anonymous · Answer

can u help me on the other question

directrix · Answer

Where is the other question?