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in ΔOWY
OY=17
WY=1/2×XY=15cm
angle OWY=90°
hence by pythagoras theorem
OY²=OW²+WY²
17²=OW²+15²
289=OW²+225
OW²=289-225
OW²=64
OW=8
similarly OU=8
OY=17
WY=1/2×XY=15cm
angle OWY=90°
hence by pythagoras theorem
OY²=OW²+WY²
17²=OW²+15²
289=OW²+225
OW²=289-225
OW²=64
OW=8
similarly OU=8
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