a park is in the form of a rectangle 120 m long and 100 m wide .at the centre,there is a circular lawn of radius √1050.find the area of the park excluding the lawn
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Area of the park = (120×100)=12000 m2
Area of the park excluding the lawn = 8700 m2
Therefore, area of the circular lawn = (12000−8700) m2
πr2=3300
r2=3300×227=150×7
r=32.4 m
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