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Doctors Medicines MCQs Q&A

  1. 6 cm
  2. 5 cm
  3. 4 cm
  4. 7 cm
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1 Answers

Option 1 : 6 cm

Given:

Three cubes whose edges measure 3 cm, 4 cm and 5 cm respectively, are melted to form a single cube

Formula used:

Volume of cube = a3 

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Calculation:

Sum of volume of three cubes whose edges measure 3 cm, 4 cm and 5 cm =  Volume of new cube

⇒ 33 + 43 + 53 = a3

⇒ 27 + 64 + 125 = a3

⇒ a3 = 216

⇒ a = 6 cm

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