Subject
Bank Exam
Topic
IFIC Bank Ltd. MTO 2013
If the radius of a circle is increased by 1%, l then the area of that circle increases by what percent?
If the radius of a circle is increased by 1%, l then the area of that circle increases by what percent?
ক)
1.01%খ)
l.l%গ)
2.l%ঘ)
2.01%Explanation
Area of first circle= Pi*r2 Area of second circle= Pi*(1.01r)2 = Pi*1.0201r2 Percentage increase = (Pi*1.0201r2 - Pi*r2 ) * 100 / Pi*r2 = (1.0201 - 1) * 100 = 2.01%Related questions
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