A) \[{{R}_{1}}+{{R}_{2}}=R\]
B) \[{{R}_{1}}+{{R}_{2}}>R\]
C) \[{{R}_{1}}+{{R}_{2}}<R\]
D) Nothing definite can be said about the relation among \[{{R}_{1}},\,{{R}_{2}}\]and R.
Correct Answer: A
Solution :
| According to the given condition, |
| Circumference of circle |
| = Circumference of first circle |
| + Circumference of second circle |
| \[\therefore \,\,\,\,2\pi R=2\pi {{R}_{1}}+2\pi {{R}_{2}}\] |
| \[\Rightarrow \,\,\,\,R={{R}_{1}}+{{R}_{2}}\] |
You need to login to perform this action.
You will be redirected in
3 sec
