Multiple choice

What approximate value will come in place of question marks (?) in the question given below? $( (57.5)^{2} - (33.2)^{2} - (11.9)^{2} = ? )$

  1. 4000

  2. 6000

  3. 2000

  4. 10000

  5. 8000
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Approximate: 58² ≈ 3364, 33² ≈ 1089, 12² ≈ 144. Then 3364 - 1089 - 144 = 2131, which rounds to 2000. The difference of squares formula a² - b² = (a+b)(a-b) is also useful.

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