Circles
The distance between the centre of the two circles of radii r1 and r2 is d. they will touch each other internally if:
(1) d = r1 or r2
(2) d = r1 + r2
(3) d = r1 - r2
(4) d = √r1 r2
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |
Circles
In figure, A, B, C and D are four points on a circle. AC and BD interest at a point E such that < BEC = 125° and <ECD = 30°. Then <BAC =
(1) 95°
(2) 110°
(3) 85°
(4) 105°
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |
Circles
If three equal circles of radius 3 cm each touch each other externally as shown, then the area of the shaded portion is:
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 2 Solution : -. |