Railways PYQCBT 2 2017

RRB NTPC · Question 105

The length of a rectangular board is 4 times that of its breadth. If the area of the board is 256 sq. meters, find its length.

  1. 8 m

  2. 16 m

  3. 24 m

  4. 32 m

Show answer & explanation

Answer: (D) 32 m

Explanation

Area = 4b × b = 4b² = 256, so b² = 64 and b = 8 m. Length = 4 × 8 = 32 m.