Exams › SSC CGL (Prelims) › General

From an external point P, two tangents PA and PB are drawn to a circle. If the length of PA is 15 cm, find the length of PB.

1. 10 cm
2. 12 cm
3. 15 cm
4. 18 cm

Correct answer: 15 cm

Solution

Tangents drawn from a common external point to a circle are equal in length. Therefore, if PA = 15 cm, then PB = 15 cm.

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