XAT 2025 Question Paper | Quantitative Aptitude and Data Interpretation

XAT Previous Year Paper | XAT QADI Questions | Question 15

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Question 15 : A solid trophy, consisting of two parts, has been designed in the following manner: the bottom part is a frustum of a cone with the bottom radius 30 cm, the top radius 20 cm, and height 40 cm, while the top part is a hemisphere with radius 20 cm. Moreover, the flat surface of the hemisphere is the same as the top surface of the frustum.
If the entire trophy is to be gold-plated at the cost of Rs. 40 per square cm, what would the cost for gold-plating be closest to?

  1. Rs. 3,60,000
  2. Rs. 3,72,000
  3. Rs. 1,12,000
  4. Rs. 5,23,000
  5. Rs. 4,73,000

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The answer is 'Rs. 4,73,000'

Choice E is the correct answer.

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