A path $1 m$ 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 rates of $R s .40 p e r m^{2}$

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Solution

Edge length of garden $= 30 m$
Edge length of garden excluding the border $= 30 - 1 - 1 = 28 m$
Area of garden excluding the border $= {(28)}^{2} = 784 m^{2}$
Cost of planting grass $= R s . 40$ per square meter
Therefore,
Cost of planting grass in the garden $= 40 \times 784 = R s . 31, 360$

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A path 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 rates of Rs.40perm2

Edge length of garden =30mEdge length of garden excluding the border =30−1−1=28mArea of garden excluding the border =(28)2=784m2Cost of planting grass =Rs.40 per square meterTherefore,Cost of planting grass in the garden =40×784=Rs.31,360

A path $1 m$ 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 rates of $R s .40 p e r m^{2}$

Edge length of garden $= 30 m$
Edge length of garden excluding the border $= 30 - 1 - 1 = 28 m$
Area of garden excluding the border $= {(28)}^{2} = 784 m^{2}$
Cost of planting grass $= R s . 40$ per square meter
Therefore,
Cost of planting grass in the garden $= 40 \times 784 = R s . 31, 360$