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Find the diameter of the circle if the circumference of the circle is\(\frac {11}{5}\)m.(a) 23.07 cm(b) 20.74 cm(c) 72.33 cm(d) 70 cmI had been asked this question in an interview for job.Question is taken from Perimeter and Area of a Circle topic in division Area Related to Circles of Mathematics – Class 10

Answer»

Correct choice is (d) 70 CM

Explanation: The CIRCUMFERENCE of the circle = \(\FRAC {11}{5}\)m

2πr = \(\frac {11}{5}\)m

πd = \(\frac {11}{5}\)m(∵ Diameter = 2 × radius)

d = \(\frac {11}{5} \TIMES \frac {7}{22}\)m

d = 0.7 m

d = 0.7 × 100 cm

d = 70 cm



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