Rectangle formulas are the area formula, perimeter formula and diagonal of rectangle. For that matter, a rectangle is a four sided polygon and the length of the opposite sides are equal. A rectangle is also known as an equiangular quadrilateral has all the angles of a rectangle are right angled. A rectangle is a parallelogram with right angles in it. 

Formula for Rectangle

There are primarily three formulas of rectangle – Perimeter, Area, and Diagonal. Formulas for area, perimeter, and diagonal of rectangle are given below:

1. Perimeter of a Rectangle       

                  P = 2 (l + b)

2. Area of a Rectangle

              A = l × b

3. Diagonal of a Rectangle:

Solved Questions Using Formulas of Rectangle

Question:

Find the length of the rectangle if its area is 96 cm2 and the breadth is 16 cm.

Solution:

We know that area of a rectangle = l × b

The area is given, so find the length of the rectangle.

So,96= l × 16

=>l= 96 ⁄ 16

 i.e. Length = 6 cm     

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