Refer to the Illustration $b$ If $a = 8$ And $c = 10$

Multiple Choice

Refer to the illustration. Find $b$  if $a = 8$  and $c = 10$ .

A) 2
B) $\sqrt { 18 }$
C) $\sqrt { 10 }$
D) 6
E) $\sqrt { 514 }$