a solid cone of height12cm and radius 9cm.calculate the surface area of sphere?

A=πr(r+h2+r2)

To calculate the surface area of a sphere, we need the radius (r) of the sphere. However, in the given information, there is no mention of a sphere. It seems like you have provided the dimensions of a solid cone instead. Could you please confirm if you meant to ask for the surface area of the cone or if you have any additional information regarding a sphere?

What sphere?

I thought we had a cone.