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The length of a hall is (4/3) times its breadth. If the area of the hall be 300 square meters the difference between the length and breadth is__________?

Correct answer: D. None of these

  • A. 15m
  • B. 4m
  • C. 3m
  • D. None of these

Explanation

Let the breadth be b m, so the length is 4b/3 m. From (4b/3) × b = 300 m², we get b² = 225 m² and b = 15 m, while the length is 20 m; their difference is 20 m - 15 m = 5 m, which is not listed, so option d is correct as 'none of these'. Option a, 15 m, is the breadth rather than the difference.

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Area measures the surface enclosed by two-dimensional figures, while volume measures the space occupied by three-dimensional solids. Problems use formulas for rectangles, triangles, circles, prisms, cylinders, cones, spheres, and composite figures, including unit conversion and the distinction between surface area, lateral area, and volume.

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