Question

the radius of circle is increased by 2%.find the percentage increase in area?​

Answer 1

the first percentage increase in area will be 4.04

Answer 2

a =πr^2

radius increased 2%

R=1.02r

A= πR^2

=π(1.02r)^2

=π(1.02)(1.02)r^2

=(1.02)(1.02)a

=(1.0404)a

Area increase 4.04 %

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