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Cost of gardening 1 m broad boundary around a rectangular plot of perimeter 340 m at Rs.10/sq m:
A1700
B3400
CCannot be determined
D3400
Answer & Solution
Correct answer: B. 3400
1. Perimeter of inner rectangle = 340 m.
2. Area of 1 m broad boundary ≈ perimeter × 1 + corners; corners net to 4 × 1 = 4 sq m, total ≈ 340 m × 1 = 340 sq m (corners cancel for thin strips).
3. Cost = 340 × 10 = 3400.
_Source: KMAT Karnataka 2023 PYQ Q.49_
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