The area of a sector whose perimeter is 4 times its radius R units, is
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The area of a sector whose perimeter is 4 times its radius R units, is
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given, theta /360 * 2πr = 4r => theta /360 = 2/π ---(2)
substitute 2 in 1
=> 2* r^2 is area
therefore area of sector is 2r^2
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