ofUse π =3.14]e cost ofby a 2 mwide path. Find the cos1256 cm21. A circular pond is 17.5 m in diameter. It is surrounded by a 2 m i.UcuUse 3.14125 per m2Orconstructing the path at the rate ofFind the difference of the areas of a sector of angle 120 and

ofUse π =3.14]e cost ofby a 2 mwide path. Find the cos1256 cm21. A ci

1.	ofUse π =3.14]e cost ofby a 2 mwide path. Find the cos1256 cm21. A circular pond is 17.5 m in diameter. It is surrounded by a 2 m i.UcuUse 3.14125 per m2Orconstructing the path at the rate ofFind the difference of the areas of a sector of angle 120 and
Answer» area of path=pi. {R^2-r^2}R=17.5/2+2=8.75+2=10.75r=8.75now area of path =22/7 x ({10.75)^2-(8.75)^2=22/7 x 2 x 19.5=122.460 m^2nowcost of constructing path =122.46 x 253061.5 Rs