Tolong jawab.. Pakai caranya...

OR = √RS² + OS²
RS = PQ
PQ = √QO² - OP²
= √ (√160)² - 5²
= √ 160 - 25
PQ = RS = √135

OR = √RS² + OS²
= √(√135)² + 3²
= √ 135+9
= √144
OR = 12 cm