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Doctors Medicines MCQs Q&A

  1. 2
  2. 8
  3. 4
  4. 6
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1 Answers

Option 4 : 6

Given:

Height of cylindrical rod is 8 times of its radius.

Formula:

Volume of cylinder = πr2h

Volume of sphere = (4/3) πr3

Calculation:

Let radius of the cylindrical rod be r cm

Height of the cylindrical rod = 8r cm

Radius of the spherical ball = r cm

Let number of newly formed balls be x, then

According to the question

(4/3) × π × r3 × x = π × r2 × 8r

⇒ x = 8 × (3/4)

⇒ x = 6

Hence, number of newly formed balls is 6.

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