Q2. If distance between centre to chord is 12 cm and length of chord is 10 cm, then diameter of circle is –
(a) 13 cm
(b) 14 cm
(c) 26 cm
(d) 30 cm
Q5. If AB = 8 cm and CD = 6 cm is two parallel chord which is same side on centre. Distance between both chord is 1 cm. Therefore, radius of circle is?
(a) 5 cm
(b) 4 cm
(c) 3 cm
(d) 2 cm
Q7. At certain rate of simple interest Rs. 1600 amounted to Rs. 1840 in 5 years. If the rate of interest be decreased by 3%, what will be the amount after 5 years?
Q8. In an examination, average marks obtained by the girls of a class is 85 and the average marks obtained by the boys of the same class is 87. If the girls and boys are in the ratio 4 : 5, average marks of the whole class (approx.) is closest to
Q10. The simple interest on a sum of money is 8/25 of the sum. If the number of years is numerically half the rate percent per annum, then the rate percent per annum is
(c) 6 1/4