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OpenStudy (anonymous):
a radar whose effective range is 500m is positioned 180m from a straight road. what length of the road is under radar surveillance ?
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OpenStudy (anonymous):
|dw:1333234829247:dw| x=sqrt(500^2-180^2)
OpenStudy (anonymous):
the answer is different to the answers in the book, it is 933, but i dont know how you get that anser
OpenStudy (anonymous):
with the pythagoras' method it turns out to be 466
OpenStudy (anonymous):
ohhh sry!! you have to double up what u find with x. note that it is both ways protected by the radar
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