The diameter of a circular park is 140 meters. Around it on the outside, a path having the width 7 meters is constructed. If the path has to be fenced from inside and outside at the rate of ₹7 per metre, find its total cost
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Answer:
radius of circular park is 70m.
width of circular path is 7m.
then the outer radius of circular park is 77m.and inner radius is 70m.
area of outer circular park = pi r2
= 18634m2
area of inner circular park = pir2
=
15400m2
area of outer circular park-- area of inner circular park
=3234m2
cost =3234 multiple 7
=Rs.22638
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