Distinguishing between the area and perimeter of a rectangle
In this lesson we solve real world problems involving the perimeter and area of rectangles. This makes it easy to distinguish between the practical application of perimeter and area calculation of rectangles in real life.
Formula for finding Perimeter of a rectangle
The perimeter of a rectangle of length l and width w is given by
Perimeter P = 2(l + w) units
Formula for finding Area of a rectangle
If a rectangle has a length ‘l’ and a width ‘w’, then the area of the rectangle is given by
Area A = l × w square units
Find the perimeter of the following rectangle.
Perimeter of a rectangle = 2(l + w); l = length = 6; w = width = 5
Perimeter of given rectangle = 2(6 + 5) = 22 units
Find the area of the following rectangle.
Area of a rectangle = l × w; l = length = 9; w = width = 2
Area of given rectangle = 9 × 2 = 18 square units