TSA of a cone with 465ml volume

chickn-winz · #1 $Old$ 11-17-2008, 03:59 AM

i require help with a project,

i need to find out what the Total Surface Area of a cone with a volume of 465ml
if you could post all workings out aswell that would be greatly appreciated

ADARSH · #2 $Old$ 11-17-2008, 04:50 AM

Hi,chickn

Quote:

Originally Posted by chickn-winz $View Post$

i need to find out what the Total Surface Area of a cone with a volume of 465ml

let h be height and r be radius
the volume of cone $=\frac{1}{3}\pi r^2 = 465$
the total surface area is given by
$TSA=\pi r^2+2\pi r \sqrt{r^2+h^2}$ thus either height or radius of base should be given in the question