Mathematics
A rectangular plot 20 m long and 14 m wide is to be covered with grass leaving 2 m all around. Find the area to be laid with grass.
Mensuration
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Answer
Consider ABCD as a plot.
Length of plot = 20 m and breadth of plot = 14 m.
Let PQRS be the plot to be covered with grass.
From figure,
PQ = 20 - (2 × 2)
= 20 - 4
= 16 m
QR = 14 - (2 × 2)
= 14 - 4
= 10 m
Area of rectangular plot PQRS = length × breadth
Substituting the values we get,
Area = 16 × 10 = 160 m2.
Hence, area to be laid with grass = 160 m2.
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