Q. Choose correct alternative answer and fill in the blanks.
(i) Radius of a circle is 10 cm and distance of a chord from the centre is 6 cm. Hence the length of the chord is .........
(A) 16 cm (B) 8 cm (C) 12 cm (D) 32 cm
(ii) The point of concurrence of all angle bisectors of a triangle is called the ......
(A) centroid (B) circumcentre (C) incentre (D) orthocentre
(iii) The circle which passes through all the vertices of a triangle is called .....
(A) circumcircle (B) incircle (C) congruent circle (D) concentric circle
(iv) Length of a chord of a circle is 24 cm. If distance of the chord from the centre is 5 cm, then the radius of that circle is ....
(A) 12 cm (B) 13 cm (C) 14 cm (D) 15 cm
(v) The length of the longest chord of the circle with radius 2.9 cm is .....
(A) 3.5 cm (B) 7 cm (C) 10 cm (D) 5.8 cm
(vi) Radius of a circle with centre O is 4 cm. If l(OP) = 4.2 cm, say where point P will lie.
(A) on the centre (B) Inside the circle (C) outside the circle(D) on the circle
(vii) The lengths of parallel chords which are on opposite sides of the centre of a circle are 6 cm and 8 cm. If radius of the circle is 5 cm, then the distance between these chords is .....
(A) 2 cm (B) 1 cm (C) 8 cm (D) 7 cm
