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15. Find the area of the given figure. 16.5 cm4.5 cm+13.5 cm+2.5 cmFig. 29.29 |
| Answer» PERIMETER of the RECTANGLE = PQ + QR + RS + SP = b +l + b + l = 2b +2lAgain, ABCD is a rectangle. We know that the OPPOSITE sides of a rectangle are equal.Perimeter of a RectangleAB = CD = 5 cm and BC = AD = 3 cmSo, the perimeter of the rectangle ABCD = AB + BC + CD + AD = 5 cm + 3 cm + 5 cm + 3 cm = 16 cmIt can be written as 5 cm + 5 cm + 3 cm + 3 cm = (2 × 5) cm + (2 × 3) cm = 2 (5 + 3) cm = 2 × 8 cm = 16 cmWe add length and breadth twice to find the perimeter of a rectangle.Perimeter of a rectangle = 2 (length + breadth) | |