If the area coverage of one sprinkler is 20 m2, with a maximum and minimum spacing of 4.6 m and 1.8 m respectively, the minimum number of sprinklers required to be arranged in a regular orthogonal grid to cover the area of a 15 m 20 m room would be _______.

If the area coverage of one sprinkler is 20 m2, with a maximum and min

1.	If the area coverage of one sprinkler is 20 m2, with a maximum and minimum spacing of 4.6 m and 1.8 m respectively, the minimum number of sprinklers required to be arranged in a regular orthogonal grid to cover the area of a 15 m 20 m room would be _______.
A.	5
B.	10 to 15
C.	20 to 20
D.	40 to 40
Answer» D. 40 to 40

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If the area coverage of one sprinkler is 20 m2, with a maximum and minimum spacing of 4.6 m and 1.8 m respectively, the minimum number of sprinklers required to be arranged in a regular orthogonal grid to cover the area of a 15 m 20 m room would be _______.

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