This can be solved using both the statements.
As from statement I, we know that L × B = 48 or B = L/48.
From statement II, we have,
L2 + B2 = 100.(using pythagoras theorem)
or, L2 + (L/48)2 =100.
L is the only unknown in this equation and can be found out.
L2 = 99.95661 = 100
L = 10
Option A is the Correct Answer.