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      Question

      A spherical balloon is being inflated such that its

      radius is increasing at a rate of 2 cm per second. After 5 seconds, find the volume of the balloon. (Use π = 3.14)
      A 523.3 cm³ Correct Answer Incorrect Answer
      B 1047.6 cm³ Correct Answer Incorrect Answer
      C 2094.4 cm³ Correct Answer Incorrect Answer
      D 4186.6 cm³ Correct Answer Incorrect Answer

      Solution

      Radius after 5 seconds = 2 × 5 = 10 cm Volume of sphere = (4/3)πr³ = (4/3) × 3.14 × (10)³ = (4/3) × 3.14 × 1000 = 4186.6 cm³.

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