SOLUTION: how many trees of 3 meters apart can be erected in 15 meters by 12 meters rectangular yard

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Question 884392: how many trees of 3 meters apart can be erected in 15 meters by 12 meters rectangular yard
Answer by josmiceli(19441) About Me  (Show Source):
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Along one of the 15 m sides, there can be 6
trees planted 3 m apart.
That will give five 3 m spaces between them
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Along one of the 12 m sides, there can be 5
trees planted 3 meters apart.
That will give four 3 m spaces between them
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Multiplying +6%2A5+, 30 trees can be planted
in the 15m x 12 m yard