A has agreed to mow the lawn, which is a 20m by 40 m rectangle. The mower mows a 1 m wide strip. If A starts at one corner and mows around the lawn toward the centre, about how many times would he go round before he has mowed half the lawn?

Options
- 2.5
- 3.5
- 3.8
- 4.0

CORRECT ANSWER : 3.8

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