In a garden, there are 10 rows and 12 columns of papaya trees.The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the gerden.The length of the garden is
A
24 metres
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B
14 metres
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C
20 metres
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D
18 metres
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Solution
The correct option is B24 metres Each row contains 12 plants.
There are 11 gapes between the two corner trees (11×2) metres and 1 metre on each side is left.