Solve the Problem $\sqrt { 1354 }$ B) $\sqrt { 1238 }$

Multiple Choice

Solve the problem.
-The two circles have radii of 3 and 7 respectively. The distance between their centers is 36. What is x, the length of one of their common tangents?

A) $\sqrt { 1354 }$
B) $\sqrt { 1238 }$
C) $\sqrt { 1287 }$
D) $\sqrt { 1247 }$