Question

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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Answer 1

Answer:

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