If the radius of a circle of reduced by $40 %$ its circumference is reduced by

60 %

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40 %

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35 %

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45 %

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Solution

The correct option is B $40 %$
If the radius of a circle will be reduced by $40$ % its circumference will also be reduced by $40 %$ because circumference of circle is directly dependent on radius of the circle as the formula to find the circumference is Circumference= $2 π r$ or $π d$
$d$ is diameter which is $2 r$

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If the radius of a circle of reduced by 40% its circumference is reduced by

The correct option is B 40%If the radius of a circle will be reduced by 40% its circumference will also be reduced by 40% because circumference of circle is directly dependent on radius of the circle as the formula to find the circumference is Circumference= 2πr or πdd is diameter which is 2r

If the radius of a circle of reduced by $40 %$ its circumference is reduced by