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Rs aggarwal solutions

A rope by which a cow is tethered is increased from 16 m to 23 m. How much additional ground does it have now to graze?

At radius = 16 m, a cow can graze the area of the plot is πr^2

= 22/7 x 16 x 16

= 804.5 m^2

At radius = 23 m, the cow can graze the area of the plot is πr^2

= 22/7 x 23 x 23

= 1662.57 m^2

Additional ground area = 1662.57 - 804.5 = **858 m^2**

At radius = 16 m, a cow can graze the area of the plot is πr^2

= 22/7 x 16 x 16

= 804.5 m^2

At radius = 23 m, the cow can graze the area of the plot is πr^2

= 22/7 x 23 x 23

= 1662.57 m^2

Additional ground area = 1662.57 - 804.5 = **858 m^2**

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