Find the area of the sector of a circle whose radius is r and length of the arc is l.
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2πr ..... length s area = πr^2
1....______________=πr^2/2πr. = r/2
l ________________r/2 ×l =(r×l)/2
So area of the arc is lr/2 sq unit.
1....______________=πr^2/2πr. = r/2
l ________________r/2 ×l =(r×l)/2
So area of the arc is lr/2 sq unit.
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