By use of these formulae, we can easily determine the area of a body.

**Area of square = (side) ^{2}**

**Area of rectangle = length x breadth**

**Area of a triangle = 1/2 (base x height)**

**Area of trapezoid/ trapezium = 1/2 (distance between parallel sides) x (sum of parallel sides)**

**Area of circle = πr ^{2}** (where, r = radius of circle)

**Surface area of a sphere = 4πr ^{2}**

^{ }(where, r = radius of sphere)

**Area of parallelogram = base x height**

**Area of curved surface of cylinder = 2πrl** (where, r = radius of cilinder and l = length of cylinder)

**Area of ellipse = π **x** a **x** b** (where, a and b are semi major and semi minor axis of ellipse)

**Surface area of a cube = 6(side) ^{2}**

**Total surface area of cone = πr ^{2} + πrl** (where, πrl = πr√r

^{2}+ h

^{2})