A) 2.3 cm
B) 4.5 cm
C) 5 cm
D) 7 cm
Correct Answer: C
Solution :
\[r=\sqrt{r_{1}^{2}+r_{2}^{2}}=\sqrt{9+16}=\sqrt{25}=5\,\,cm\]
You need to login to perform this action.
You will be redirected in
3 sec
