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The range of an automatic rotary sprinkler irrigation device on the park grassland is 10m, and the area it can irrigate is () A. 78.5m2B. 314m2C. 12.56m2
14 × 102 = 314 square meters; a: its maximum sprinkler irrigation area is 314 square meters
The maximum range of an automatic sprinkler irrigation device on a grassland is 12 meters. What is the maximum area of sprinkler irrigation?
Sprinkler irrigation area is the largest round, that is, nozzle for the center, 12 meters for the radius of the circle
Maximum area = 3.14 * 12 & # 178; = 452.16 (M2)
There is an automatic rotary sprinkler on the grass in the park with a range of 8 meters. How many square meters can it spray on the grass?
3.14 × 82, = 3.14 × 64, = 200.96 square meters; a: the area of grassland it can spray is 200.96 square meters
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