Sprinkler 80801

A sprinkler is located in the park at a distance of 3m from the sidewalk. Water blasted up to a distance of max. 5m. What is the maximum length of the sidewalk it will cover?

Correct answer:

x =  8 m

Step-by-step explanation:

r=5 m v=3 m  r2 = v2 + (x/2)2  x=2 r2v2=2 5232=8 m

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