Slant height of cone, (l) = 10 cm
Radius = diameter / 2
Radius(r) = (10.5/2)cm = 5.25cm
We have to find curved surface area of cone
Since, Curved surface area of cone is = πrl
= 165 cm2
Therefore, the curved surface area of the cone of height 10m and base 10.5 cm is 165 cm2.