What is the surface area of a cone when the slant height is 6 mm and the diameter is 4 mm? \

Diameter of cone = d = 4mm
So,
Radius of cone = r = 2mm
Slant Height = l = 6mm
Surface Area = A = ? 

The formula for the surface area of cone is:



Using the values, we get:

mm²

Therefore, the surface area of the cone with diameter 4mm and slant height of 6mm will be 16π mm²

Bc equals mb that should be your answer