Perimeter Formulas

A perimeter means the distance of the boundary of a two dimensional shape. Also defined as the total sum of the length of all the sides of the object. The algebraic sum of length of each side is the perimeter of that area.
We have the formula available for the following shapes:

It is also defined as the total sum of the length of all the sides of the object. So, the algebraic sum of the length of individual sides of the object gives the perimeter of that object.

Geometric Shape Perimeter Formula Metrics
Parallelogram 2(Base + Height)
Triangle A + b + c a , b and c being the side lengths
Rectangle 2(Length + Width)
Square 4a a =Length of a side
Trapezoid a +b+c+d A, b, c, d being the sides of the trapezoid
Kite 2a + 2b a = Length of first pair
b = Length of second pair
Rhombus 4 x a a  = Length of a side
Hexagon 6 x a a  = Length of a side

Practise This Question

A wooden block of mass 10 g is dropped from the top of a cliff 100 m high. Simultaneously, a bullet of mass 10 g is fired from the foot of the cliff in the upward direction with a velocity of 100 ms1. At what time will the bullet and the block meet ?