Mrs. Kaushik has a square plot with the measurement as shown in the figure. She wants to construct a house in the middle of the plot. A garden is developed around the house. Find the total cost of developing a garden around the house at the rate of ₹ 55 per m².

Side of a square plot = 25 m
∴ Area of square plot = (side)² = (25)² = 625m²
Length of the house = 20 m and
Breadth of the house = 15 m
∴ Area of the house = length x breadth = 20 x 15 = 300 m²
Area of garden = Area of square plot – Area of house
= 625 – 300 = 325 m²
∵ Cost of developing the garden per sq. m = ₹ 55
∴ Cost of developing the garden 325 sq. m = ₹ 55 x 325
= ₹ 17,875
Hence total cost of developing a garden around is ₹ 17,875.

Class 8 Maths Chapter 11 Exercise 11.1 Solution in Video

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