The important formulas covered in this chapter are as follows:
| Area of Trapezium | height x (sum of parallel sides)/2 |
| Area of Rhombus | ½ x d1 x d2 |
| Area of Special Quadrilateral | ½ x d x (h1 + h2) |
| Surface area of Cuboid | 2(lb + bh + hl) |
| Surface area of Cube | 6a2 |
| Surface area of cylinder | 2πr(r + h) |
| Volume of Cuboid | l × b × h |
| Volume of Cube | a3 |
| Volume of cylinder | πr2h |
Where,
- d1 and d2 are the diagonals of the rhombus
- d is the diagonal of a special quadrilateral which is divided into two triangles
- h1 and h2 are the two perpendiculars from the vertices of a quadrilateral to its diagonal
- l, b and h denotes length, breadth and height of the cuboid
- r represents the radius of the cylindrical base
- a is the side of the cube
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