Question 48Asked in CTET February 2026 Paper 2 Maths & Science, 1 Mar 2026

Height of a right circular cylinder is 6 m. If three times the sum of the areas of its two circular bases is twice its curved surface area, then volume of…किसी लंब-वृत्तीय बेलन की ऊँचाई 6 m है । यदि इसके दोनों वृत्तीय आधारों के क्षेत्रफलों के योगफल का तिगुना इसके वक्र-पृष्ठीय क्षेत्रफल का दुगुना है, तो इस बेलन…

Height of a right circular cylinder is 6 m. If three times the sum of the areas of its two circular bases is twice its curved surface area, then volume of the cylinder (in m³) is :
किसी लंब-वृत्तीय बेलन की ऊँचाई 6 m है । यदि इसके दोनों वृत्तीय आधारों के क्षेत्रफलों के योगफल का तिगुना इसके वक्र-पृष्ठीय क्षेत्रफल का दुगुना है, तो इस बेलन का आयतन (m³ में) है :
  1. A96π96π
  2. B64π64π
  3. C48π48π
  4. D112π112π
Show answerHide answer

Correct answer: (A) 96π96π

Explanation

3 × 2πr² = 2 × 2πrh gives 3r = 2h = 12, so r = 4 m. Volume = πr²h = π × 16 × 6 = 96π m³.3 × 2πr² = 2 × 2πrh से 3r = 2h = 12, अतः r = 4 m। आयतन = πr²h = π × 16 × 6 = 96π m³।

From CTET February 2026 Paper 2 Maths & Science, 1 Mar 2026 — Previous Year Paper

This is question 48 of CTET February 2026 Paper 2 Maths & Science, 1 Mar 2026 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.