A cow is tied to a pole with the rope of length 12m.If the cow grazes such that it describes a circle of radius 12 m how far will it have moved when the rope traces an angle of 60 degree at the pole?

A cow is tied to a pole with the rope of length 12m.If the cow grazes

1.	A cow is tied to a pole with the rope of length 12m.If the cow grazes such that it describes a circle of radius 12 m how far will it have moved when the rope traces an angle of 60 degree at the pole?
Answer» 154m 2 .Step-by-step explanation:Correct OPTION is D154m 2 Given-ABCD is a rectangular field of dimensions 20m×16m.A cow tied by a rope BP=BQ=14m at B, is grazing.Here the cow GRAZES an AREA A = Area of Sector with central ANGLE 90 o and radius 14m.∴A= 360 o θ ×π×r 2 where θ= Central Angle =90 o ,andr= radius of the sector=14m.∴A= 360 o 90 o × 722 ×14 2 =154m 2 .