A circular field of radius 41 m has a circular path of uniform width 5m along and inside its boundary . Find the cost of paving the path at rupees 25per square meter
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52
heya!
here's ur answer..
given the radius of the circular field=41m
hence area of the circular field=πr²
=22/7×41×41
=36982/7m²
the path is inside the field. so the radius of the field excluding path is=41-5(as the width of the path is 5m)
=36m
area of the field excluding path=πr²
=22/7×36×36
=28512/7m²
therefore area of the path=36982-28512/7
=8470/7
=1210m²
thus cost of paving the path if per m² costs ₹25 =1210×25
=₹30250
hope this helps..!
☺☺☺
here's ur answer..
given the radius of the circular field=41m
hence area of the circular field=πr²
=22/7×41×41
=36982/7m²
the path is inside the field. so the radius of the field excluding path is=41-5(as the width of the path is 5m)
=36m
area of the field excluding path=πr²
=22/7×36×36
=28512/7m²
therefore area of the path=36982-28512/7
=8470/7
=1210m²
thus cost of paving the path if per m² costs ₹25 =1210×25
=₹30250
hope this helps..!
☺☺☺
Answered by
2
Circle area is pir²
22/7×41×41
Cost of paving is
22/7×41×41×25
13,207.8
22/7×41×41
Cost of paving is
22/7×41×41×25
13,207.8
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