- A3 m
- B4 m
- C2 m
- D6 m
Step-by-Step Solution
Outer length − lawn length = 26 − 20 = 6 m, shared by two sides: 6 ÷ 2 = 3 m. (Breadth check: 18 − 12 = 6, ÷ 2 = 3.)
Answer: A) 3 m
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