Math, asked by narendraysn58591, 1 year ago

A road 3.5 m wide surrounds a circular plot whose circumference is 44 m . Find the cost of paving the road at 20 rs per m² .

Answers

Answered by suresh7898

11

c=2Πr=44 then r=7 cm,R=7+3.5=10.5cm Use area of ring formula=Π[R+r][R-r]=192.5 sq.mans multiply by 20=₹385

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