A) 12 km
B) 15 km
C) 16 km
D) 18 km
Correct Answer: B
Solution :
As wee know \[{{(ac)}^{2}}={{(ab)}^{2}}+{{(bc)}^{2}}\] \[{{(ac)}^{2}}={{(12)}^{2}}+{{(9)}^{2}}\] \[{{(ac)}^{2}}=144+81\] \[{{(ac)}^{2}}=225\] \[ac=\sqrt{225}=15\,\,km\]You need to login to perform this action.
You will be redirected in
3 sec