Question

http://kcdistancelearning.blackboard.com/asmnt_images/MTH05-E-0803-0-01/MTH05.5.exam.105.gif

1.)Using the link above, find X

A.)130
B.)100
C.)80
D.)65
http://kcdistancelearning.blackboard.com/asmnt_images/MTH05-E-0803-0-01/MTH05.5.8.q5.jpg
using the link above:
2.) If p = 5 and q = 3, are the spheres similar?
A.) yes
B.) no
C.)Cannot tell with the given information

please can somebody help! :)