A path 7 meters wide surrounds a circular lawn 252 m in diameter. Find the area of path.
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Solution
Radius of the circular lawn =12×252m =126m External radius of the path =(126+7)m =133m Area of the path where, R=133,r=126 =π(R+r)(R−r)m2 =227×(133+126)×(133−126)m2 =227×259×7m2 =5698m2