- A17
- B15
- C19
- D23
Step-by-Step Solution
The perpendicular from the centre bisects the chord, so half-chord = 15. Radius = √ √(225 + 64) = √289 = 17.
Answer: A) 17
In a circle, a chord 30 cm long is 8 cm away from the centre. What is the radius of the circle? (answer in cm)
Competition practiceGeometry
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Geometry practice questions
More Geometry practice
If the angles of a triangle are in the ratio 3 : 5 : 7, what is the middle-sized angle?…Two triangles are similar with the ratio of their sides 2 : 3. What is the ratio of…What is the area (in square units) of the triangle with vertices (0, 0) , (4, 0) and (0,…The length of a tangent drawn from a point 13 cm away from the centre of a circle of…How many lines of symmetry does a square have?