Ssc ibps rrb imp mensuration formulas and tricks

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Mensuration Formulas and tricks


 Area of Rectangle = Length * Breadth (Diagonal of Rectangle)2 = (Length)2 * (Breadth)2


 Perimeter of Rectangle = 2 * (Length + Breadth)


 Area of a Square = (Side)2 = 1/2 * (Diagonal)2


 Perimeter of Square = 4 * Side


 Area of 4 walls of a room = 2 * (Length + Breadth) * Height


 Area of a parallelogram = (Base * Height)


 Area of a rhombus = 1/2 * (Product of Diagonals)


 Area of an Equilateral Triangle = Root of (3) / 4 * (Side)2


 Perimeter of an Equilateral Triangle = 3 * Side


 Area of an Isosceles Triangle = b/4 * root of 4a2 – b2


 Area of Triangle = 1/2 * Base * Height


 Area of Triangle = root of [s(s – a) * (s – b) * (s-c)]


 Area of Trapezium = 1/2 * (Sum of parallel sides * perpendicular distance between them)


 Circumference of a circle = 2*(22/7)*r


 Area of a circle = (22/7) * r2


 Area of a parallelogram = 2 * root of [s(s – a) * (s – b) * (s-d)]


 Volume of cuboid = (l*b*h)


 Whole Surface of cuboid = 2 * (lb + bh + lh) sq. units


 Diagonal of Cuboid = Root of (l2 + b2 + h2)


 Volume of a cube = a3


 Whole Surface Area of cube = (6*a2)


 Diagonal of Cube = Root of (3) * a


 Volume of Cylinder = (22/7) * r2 * h


 Curved Surface area of Cylinder = 2*(22/7)*r*h


 Total Surface Area of Cylinder = [2*(22/7)*r*h] + {2*(22/7)*r2)


 Volume of Sphere = (4/3) * (22/7) * r3


 Surface Area of Sphere = 4 * (22/7) * r2


 Volume of hemisphere = (2/3) * (22/7) * r3


 Curved Surface area of hemisphere = 2 * (22/7) * r2


 Whole Surface Area of hemisphere = 3 * (22/7) * r2.

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