- A₹1600
- B₹200
- C₹5800
- D₹100
Step-by-Step Solution
Fence: perimeter m, cost . Grass: area , cost . Difference .
Answer: B) ₹200
A rectangular lawn is to be fenced all round and also covered with fresh grass, at the rates shown. How much MORE does the grass cost than the fence?
Class 6MensurationMensuration
Key idea: Choosing the right concept
Watch for the question wording:
- **Fencing a garden, putting a border, walking around a track** → perimeter (length unit)
- **Painting a wall, covering a floor with tiles, area of cloth needed** → area (square unit)
A classic trap: 'How much wire to fence a square plot of side 20 m?' — perimeter, not area. The wire goes *around* the boundary.
- **Fencing a garden, putting a border, walking around a track** → perimeter (length unit)
- **Painting a wall, covering a floor with tiles, area of cloth needed** → area (square unit)
A classic trap: 'How much wire to fence a square plot of side 20 m?' — perimeter, not area. The wire goes *around* the boundary.
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