Question

A=2(pi)r^2+2(pi)hr, for r

Answer 1

\[A=2pir ^{2}+2pihr \]

Answer 2

its not easy to solve for r

Answer 3

you can use quadratic formula

Answer 4

where did you get this problem

Answer 5

my math homework on web assign

Answer 6

i think you have a mistake. what was the original question

Answer 7

yeah thats a bit odd

Answer 8

@ganeshie8 can you take a look at this

Answer 9

can you post the other parts of the question

Answer 10

that is all.

Answer 11

could be a typo

Answer 12

@dan815 can you look at this

Answer 13

@erikuh i will get ask around, im sure somebody has an idea

Answer 14

@rvc can you check this out

Answer 15

gtg @perl

Answer 16

okay thankyou(: i will ask my teacher if its a typo

Answer 17

ya why dont u use quadratic formula

Answer 18

A=2PIR^2+2PIHR
a=kr^2+khr
0=kr^2+khr-a

\[r= \frac{-kh +/- sqrt( k^2h^2-4*k*-a)}{2k}\]