9. Let AABC ~ ADEF and their areas be 64 cm² and 121 cm² respectively. If EF = 15.4 cm, find BC.
10. In the figure, Di, D2, D3 are points on ray DM at equal distances and D3P || D-E. What
will be the ratio of DE to DP?
E
D
D.
D.
11. Find the value of sin 60° cos 30º - cos 60° sin 30°
12. If tana = 13 and tanß
1
13
O 13. If the area of a circle is equal to sum of the areas of two circles of diameters 10 cm and 24
cm, calculate the diameter of the larger circle (in cm).