A chord of 16 cm lies in a circle of radius 10 cm. How far is the chord from the centre?
A12 cm
B8 cm
C6 cm
D4 cm
Answer & Solution
Correct answer: C. 6 cm
The perpendicular from the centre bisects the chord, so the distance is the square root of 100 - 64 = 6 cm.
Keep practising Geometry and Trigonometry
Browse all Geometry and Trigonometry questions for RRB NTPC, or explore more Mathematics topics.
Related questions
RRB NTPC · Trigonometric RatiosRRB NTPC · Triangle CentersRRB NTPC · Classify Angle TypesRRB NTPC · Match Trigonometric ValuesWhich line segment connects two points on a circle and divides it into two segments?When does the sum of two side lengths equal the third side?What total measure in degrees do the two non-right angles of a right triangle add up to?What geometric shape is the planar region bounded by two concentric circles?