Question 11 - NCERT Exemplar - MCQ - Chapter 11 Class 10 Areas related to Circles

Last updated at July 30, 2026 by

The radius of a circle whose circumference is equal to the sum of the circumferences of the two circles of diameters 36 cm and 20 cm is

(A) 56 cm   (B) 42 cm   (C) 28 cm   (D) 16 cm

MCQ (NCERT Exemplar) - Area Class 10 - The radius of a circle whose - NCERT Exemplar - MCQ

part 2 - Question 11 - NCERT Exemplar - MCQ - Serial order wise - Chapter 11 Class 10 Areas related to Circles

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Question 11 The radius of a circle whose circumference is equal to the sum of the circumferences of the two circles of diameters 36 cm and 20 cm is (A) 56 cm (B) 42 cm (C) 28 cm (D) 16 cm Now, Circumference of 18 cm circle + Circumference of 10 cm circle = Circumference of circle with radius r 2𝜋(18) + 2𝜋(10) = 2𝜋r 18 + 10 = r 28 = r r = 28 cm So, the correct answer is (C)

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