Question 12 - NCERT Exemplar - MCQ - Chapter 11 Class 10 Areas related to Circles

Last updated at August 6, 2026 by

The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 24 cm and 7 cm is

(A) 31 cm Ā  (B) 25 cm Ā  (C) 62 cm Ā  (D) 50 cm

MCQ - NCERT Exemplar Class 10 - The diameter of a circle whose area is - NCERT Exemplar - MCQ

part 2 - Question 12 - NCERT Exemplar - MCQ - Serial order wise - Chapter 11 Class 10 Areas related to Circles

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Question 12 The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 24 cm and 7 cm is (A) 31 cm (B) 25 cm (C) 62 cm (D) 50 cm Now, Area of 24 cm circle + Area of 7cm circle = Area of circle with radius r šœ‹(24)2 + šœ‹(7)2 = šœ‹r2 (24)2 + 72 = r2 Now, Area of 24 cm circle + Area of 7cm circle = Area of circle with radius r šœ‹(24)2 + šœ‹(7)2 = šœ‹r2 (24)2 + 72 = r2 576 + 49 = r2 625 = r2 r2 = 625 r2 = 252 r = 25 cm Thus, Diameter = 2 Ɨ 25 = 50 cm So, the correct answer is (D)

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