if the length of radius of circular field was increased by 10% .let us write calculating what percentage it increased the area of circular field
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Step-by-step explanation:
Area=πr2
Radius after increase 10 %=110r/100=11r/10
New area =π(11r/10)²=π121r²/100sq unit
π•121r²/100-πr²
=121/100-100=21πr²/100
Percentage increase in area=21πr²/100/πr²×100=21 %
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