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An area of 36 square metres is being enclosed on all 4 sides with the least amount of fence. If the fence comes in 2 metre sections, how many sections are neede?

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The dimensions could be
2 * 18
3 * 12
4 * 9
6 * 6

P = 2L + 2W

P = (2 * 2) + (2 * 18)
P = 40

Take it from there.

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