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Urgent! Mathematics in the second grade of junior high school
When the bamboo pole is tilted to the top just flush with the water surface, the water depth, water surface and the original position of the bamboo pole form a right triangle. The length of the hypotenuse is the length of the bamboo pole, 2+0.5 = 2.5m; The right angle side is the water depth, 2 meters. So the other right angle side (translation distance is 1.5m).

At this time, the distance to the shore is 2.4- 1.5=0.9 m, which exceeds the distance to the shore, because it can catch objects within 1 m around. So you can save yourself.