Alternatively the formula to calculate the area of a rectangle is derived by dividing the shape into two equal size right triangles. The formula they used is a simple one. The diagonal AC divides the rectangle into two equal right angle triangles.
Finding the Area of a Rectangle 1.
Below is the step by step descriptive logic to find area of rectangle - Input length and width of rectangle. Identify the length. For example for a rectangle of length 8 cm and width 5 cm the area is 8 cm 5 cm 40 cm2. To find the area of a rectangle multiply the length by the width.