Answer :
A = OPA = OSA = 90°
Hence, SOP = 90°
Also, AP = AS (Tangents from an external point are equal)
Hence, OSAP is a square
AP = AS = 10cm
CR = CQ = 27cm
BQ = BC – CQ = 38 – 27 = 11cm
BP = BQ = 11 cm
x = AB = AP + BP = 10 + 11 = 21 cm
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