alleryStart learning →Tangents PA and PB from P to a circle are perpendicular and PA = 7 cm. The radius is
A7√2 cm
B7 cm
C14 cm
D3.5 cm
Answer & Solution
Correct answer: B. 7 cm
OAPB has four right angles and OA = OB, so it is a square and the radius equals PA = 7 cm.
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