Explanation:

Let's approximate the values for a quick calculation:

- (11.91)² ˜ (12)² = 144

- (3.98)² ˜ (4)² = 16

- (12.94)² ˜ (13)² = 169

- (18.89)² ˜ (19)² = 361

Now substitute into the expression:

= [144 ÷ 16 × 169] – 361

- 144 ÷ 16 = 9

- 9 × 169 = 1521

- 1521 – 361 = 1160

So the correct answer is:

- Option 3 – 1160

Summary:

- Approximated each number to nearest whole value.

- Calculated step by step for clarity.

- Shortlisted 1160 as correct answer from the given options.