A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze? A. 38.5 sq.m B. 155 sq.m C. 144 sq.m D. 19.25 sq.m


A


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Poornima

  • Dec 28th, 2005
 

Length of the arc = (2*pi*R*angle)/360

=(2*(22/7)*7*90)/360

= 11

Area of the sector =(1/2)*(arc *R)

= (1/2)*(11*7)

= 38.5

So the ans is A.

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