Summary

1. Curved surface area of a cone = πrlπr2l

2. Total Surface area of a right circular cone = πrl+πr2 = πr(l + r)2πr(l + r)

3. Surface area of a sphere = 4πr2 2πr2

4. Curved surface area of a hemisphere = 2πr23πr2

5. Total surface area of a hemisphere = 3πr22πr2

6. Volume of a cone = 13πr2h23πr2h

7. Volume of a sphere = 43πr323πr3

8. Volume of a hemisphere = 23πr343πr3

[Here, letters l, b, h, a, r, etc. have been used in their usual meaning, depending on the context.]