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Find the radius of the circle if the circumference is 12 m.(a) 1.90 m(b) 1.09 m(c) 7.90 m(d) 1.40 mI have been asked this question during an interview.This is a very interesting question from Perimeter and Area of a Circle in chapter Area Related to Circles of Mathematics – Class 10

Answer»

Correct choice is (a) 1.90 m

To elaborate: The CIRCUMFERENCE of a circle (C) = 2πr.

12 = 2 × \(\frac {22}{7}\) × R

r = \(\frac {12}{2} \TIMES \frac {7}{22}\)

r = 1.90 m



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