Which of the following statements are true and which have are false? In each case give a valid reason for saying so `p :` Each radius of as circle is a chord of the circle `q :` The centre of a circle bisects each chord of the circle.

Which of the following statements are true and whihc are false? In each case give a valid reason for saying so. (i) p: each radius of a circle is a chord of the circle. (ii) q: the centre of a circle bisects each chord of the circle. (iii) r: circles is a particular case of an ellipse. (iv) s : if x and y are integeres such that xgty , then -xlt-y . (v) t: sqrt(11) is a rational number.

Which of the following statements are true and which are false? In each case give a valid reason for saying so, r : Circle is a particular case of an ellipse s : If x and y are integers such that x > y , then= -x<-y , t : sqrt(11) is a rational number.

State which of the following statements are true and which are false : Diameter is the longest chord of the circle.

State which of the following statements are true and which are false : Every circle has unique centre and it lies inside the circle.

The perpendicular from the centre of a circle to a chord bisects the chord.

State which of the following statements are true and which are false : The end-points of a diameter of a circle divide the circle into two parts, each part is called a semicircle.

State which of the following statements are true and which are false : The diameters of a circle are concurrent. The centre of the circle is the point common to all diameters.

State which of the following statements are true and which are false : A diameter of a circle divides the circular region into two parts, each part is called a semicircular region.

A chord of length 8 cm is drawn at a distance of 3 cm from the centre of a circle. Calculate the radius of the circle.

If a diameter of a circle bisects each of the two chords of a circle, prove that the chords are parallel.