If the radius of a circle of reduced by 40% its circumference is reduced by
A
60%
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B
40%
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C
35%
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D
45%
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Solution
The correct option is B40% 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 πd d is diameter which is 2r