Multiple choice general knowledge what is the sqare of 135 15225 18225 17225 16225 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The square of 135 is 18,225. Calculation: 135 × 135 = 18,225. This can be computed by multiplying 100 × 135 = 13,500; 30 × 135 = 4,050; 5 × 135 = 675; total = 18,225. The other options (15,225, 17,225, 16,225) are incorrect.