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Railways PYQCBT 1 2016

RRB NTPC · Question 64

What will be the cost of leveling a circular ground of diameter 28 m, if the charges are Rs. 125 per sq.m? (π = 22/7)

  1. Rs. 76, 000

  2. Rs. 76, 400

  3. Rs. 76, 800

  4. Rs. 77, 000

Show answer & explanation

Answer: (D) Rs. 77, 000

Explanation

Radius = 28/2 = 14 m. Area = πr² = 22/7 × 14 × 14 = 616 sq. m. Cost = 616 × 125 = Rs 77,000.