NCERT · Class 10 · Mathematics · CirclesThe length of a tangent drawn from a point at a distance of 10 cm from the centre of a circle of radius 6 cm is:
Step-by-Step Solution
Using Pythagoras theorem: Length = $\sqrt{10^2 - 6^2} = \sqrt{100 - 36} = \sqrt{64} = 8$ cm.
Detailed Options Breakdown
Option : 8 cm (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: 12 cm
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Circles.
Option 2: 16 cm
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Circles.
Option 3: √136 cm
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Circles.
💡 Study Guide: This question tests core syllabus concepts from Circles. For formulas, key summaries, and mock exam reference guides, read the full Circles Revision Notes.