thanks for any help!
Q1. Find the equation of the surface area function of a cylindrical grain silo. The input variable is the radius (r). (the equation is to be graphed using a graphics calculator in the following question)
Height (h) = 5 meters
Radius (r) - unknown
Surface Area (S)- unknown
Pi (p) = 3.142
So far I have:
S = 2pr^2 + 2prh (surface area formula)
S = 2p(r^2+5r)
S = 2pr(r+5)
I am not sure if this is an equation I can use to answer Q2 Use the graphic calculator emulator to draw the equation obtained at Q1.
I have also come up with: 2pr^2 + 2prh + 0 (in the quadratic expression ax^2 + bx + c=0)
When I substitute values for r I get the same surface area for both equations but am not sure if I am on the right track!
Thank you for any help!