Question

help needed
http://prntscr.com/zawk4

Answer 1

now iam confused please some one help

Answer 2

replace \(h\) by \(50\) in your last statement

Answer 3

\[100\pi r+\pi r^2=3000\]

Answer 4

then i guess you have to find \(r\) by solving the quadratic equation

Answer 5

check with r= 8.78
100 * 3.1416 * 8.78 + 3.1416*8.78*8.78 =
cut and paste into the google search window and you get
3000.50572
which is close enough, considering the rounding...