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Question

# The rectangle shown here is made up of identical squares. If the perimeter of the rectangle is 18 cm, what will be its area(in sq. cm)? 20

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Solution

## The correct option is A 20Number of squares along the length of the rectangle = 5 So, length of rectangle = 5 × side of square Number of squares along the breadth of the rectangle = 4 So, breadth of rectangle = 4 × side of square So, half of the perimeter of the rectangle = 5 × side of square + 4 × side of square = 9 × side of square It means the perimeter of the rectangle will be 18 × side of square. So, 18 cm = 18 × side of square It means the side of each square is 1 cm. So, the area of each square = 1 × 1 = 1 sq. cm Number of squares in the rectangle = 20 So, the area of the rectangle = 20 × 1 = 20 sq. cm

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