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9.12cm
10.36cm
11.34cm
12.61cm

9.12cm 10.36cm 11.34cm 12.61cm-example-1
User Armunin
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1 Answer

5 votes
tan80 = QR / RS
QR = 5.67 (2)
QR = 11.34

answer

11.34cm
User XAMPPRocky
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