Recent content by DGK

Thanks for your response! See above for my reply...sorry I'm new to this!

A/pi = r (r + sqrt( r (2r + r))Is this right? I really don't know what I'm doing!

Homework Statement Determine a simplified, factorised expression, in terms of the radius (r), for the surface area of a cone where diameter (D) = perpendicular height (h) Homework Equations A = πr (r + √(h^2 + r^2)) The Attempt at a Solution h=D=2r A = πr (r + √(2r^2 + r^2)) A/π = r (r +...