Q3. The ratio of the numbers giving the measures of the circumference and the area of a circle of radius 3 cm is
(a) 1: 3
(b) 2: 3
(c) 2: 9
(d) 3: 2
Q4. If the length and the perimeter of a rectangle are in the ratio 5 : 16, then its length and breadth will be in the ratio
(a) 5 : 11
(b) 5 : 8
(c) 5 : 4
(d) 5 : 3
Q5. The perimeters of two squares are 40 cm and 24 cm. The perimeter of a third square, whose area is equal to the difference of the area of these squares, is
(a) 34 cm
(b) 32 cm
(c) 38 cm
(d) 30 cm
Q9. Two chords AB and CD of length 6 cm and 8 cm respectively are at opposite side of centre of circle. Find the distance between chords. If diameter of circle is 10 cm.
(a) 7 cm
(b) 9 cm
(c) 5 cm
(d) 4 cm
Q10. Two chords AB and CD meet at E at right angle. AE is 6 cm, BE is 2 cm and DE is 4 cm. Find length of BC.
(a) 4
(b) √13
(c) √15
(d) 3
Q11. AB is chord of length of 3√2 cm and ∠ACB = 45° where ‘C’ is a point on circle. Find area of circle.
(a) 9π cm^2
(b) 18π cm^2
(c) 27π cm^2
(d) None of these
Q12. O’ is the centre of a circle and ABCO is a quadrilateral ∠ABC = 110°. Find angle ∠AOC.
(a) 160°
(b) 70°
(c) 140°
(d) 110
Q15. A spherical metal ball of 6 cm radius is melted and recast into three spherical balls. The radii of two of these balls are 3 cm and 4 cm. What is the radius of the third ball?
(a) 4.5 cm
(b) 5 cm
(c) 6 cm
(d) 7 cm
