2015 · Q48
The sides of a triangular field are 41 m, 40 m and 9 m. The number of rose beds that can be prepared in the field if each rose bed, on an average, needs 900 square cm space, is
Elementary MathematicsMensuration
- A2000
- B1800
- C900
- D800
Explanation
9² + 40² = 41², so the field is right-angled with area ½·9·40 = 180 m² = 1,800,000 cm²; at 900 cm² per bed this gives 2000 beds (option A).