# 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 ālā and a width āwā, then the area of the rectangle is given by

**Area A = l × w square units**

Find the perimeter of the following rectangle.

### Solution

**Step 1:**

Perimeter of a rectangle = 2(l + w); l = length = 6; w = width = 5

**Step 2:**

Perimeter of given rectangle = 2(6 + 5) = 22 units

Find the area of the following rectangle.

### Solution

**Step 1:**

Area of a rectangle = l × w; l = length = 9; w = width = 2

**Step 2:**

Area of given rectangle = 9 × 2 = 18 square units