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CBSE Class 10 Maths (Standard) 2025 · Paper 30/1/1 · Question 20

Surface Areas and Volumes 1 mark Medium
In the following question, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option.

Assertion (A): If we join two hemispheres of same radius along their bases, then we get a sphere.

Reason (R): Total Surface Area of a sphere of radius is .

  1. (a)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  2. (b)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
  3. (c)Assertion (A) is true, but Reason (R) is false.
  4. (d)Assertion (A) is false, but Reason (R) is true.

Answer

(c) Assertion (A) is true, but Reason (R) is false.

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