Answer:
11 squared, or 121.
Step-by-step explanation:
Fig. 1 = 4 b(locks)
or 2 squared
Fig. 2 = 9 b
or 3 squared
Fig. 3 = 16 b
or 4 squared
Fig. 4 = 25 b
or 5 squared
Fig. 10 would be 11 squared, or 121.
The answer is 121
