A part $1 m$ wide is built along the border and inside a square garden of side $30 m$ . Find
The cost of planting grass in the remaining portion of the garden at the rate of $R s .40 p e r m^{2}$ .

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Solution

Since the path is built inside a square garden

A new square is formed after the path is built

Width of path is $1 m$

So the side of the new square will be $30 - 1 - 1 = 28 m$

Area of the garden is $28^{2} = 784 m^{2}$

Cost of planting is $40 \times 784 = R s .313, 60$

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A part 1 m wide is built along the border and inside a square garden of side 30 m. Find The cost of planting grass in the remaining portion of the garden at the rate of Rs.40 per m2.

Since the path is built inside a square garden A new square is formed after the path is builtWidth of path is 1mSo the side of the new square will be 30−1−1=28 mArea of the garden is 282=784 m2Cost of planting is 40×784=Rs.313,60

A part $1 m$ wide is built along the border and inside a square garden of side $30 m$ . Find
The cost of planting grass in the remaining portion of the garden at the rate of $R s .40 p e r m^{2}$ .

Since the path is built inside a square garden

A new square is formed after the path is built

Width of path is $1 m$

So the side of the new square will be $30 - 1 - 1 = 28 m$

Area of the garden is $28^{2} = 784 m^{2}$

Cost of planting is $40 \times 784 = R s .313, 60$