SURFACE AREA AND VOLUMES

1. Surface area of a cuboid = 2 (lb + bh + hl)

2. Surface area of a cube = 6a²

3. Curved surface area of a cylinder = 2πrh

4. Total surface area of a cylinder = 2πr(r + h)

5. Curved surface area of a cone = πrl

6. Total surface area of a cone = πrl + πr*r , i.e., πr (l + r)

7. Surface area of a sphere of radius r = 4 π r²

8. Curved surface area of a hemisphere = 2πr²

9. Total surface area of a hemisphere = 3πr²

10. Volume of a cuboid = l × b × h

11. Volume of a cube = a³

12. Volume of a cylinder = πr²h

13. Volume of a cone = 1/3πr²h

14. Volume of a sphere of radius r = 4/3π r³

15. Volume of a hemisphere = 2/3π r³

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