The area of the semicircle is 216 cm2. Ratio of the radius of semicircle to the radius of cone are in the ratio 2: 3. If the height of the cone is 6 cm more than its radius, find the curved surface area of the cone.
(Use π = 3)
1
1440 cm2
2
1620 cm2
3
1230 cm2
4
1460 cm2
5
1220 cm2