Surface areas and Volumes — Formula Sheet
Telangana Board · Class 9 · Mathematics
5 formulas from Surface areas and Volumes (Telangana Board Class 9 Mathematics) on one page, grouped by topic.
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Formulas and Key Relations
Right Circular Cones
Relationship
l² = h² + r² (Pythagoras theorem)
Key relations
For a cuboid with length l, breadth b, and height h
Total Surface Area = 2(lb + bh + lh), Lateral Surface Area = 2h(l + b), Volume = lbh.
For a cube with edge length s
Total Surface Area = 6s², Lateral Surface Area = 4s², Volume = s³.
For a cylinder with radius r and height h
Curved Surface Area = 2πrh, Total Surface Area = 2πr(r+h), Volume = πr²h.
For a sphere with radius r
Surface Area = 4πr², Volume = (4/3)πr³.
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