Multiple choice

What approximate value will come at place of question mark (?) in the following question? (34.9)2÷7 + √? = 217.02

  1. 1765

  2. 1681

  3. 1542

  4. 1849

  5. 1623
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Substituting the approximate value of 35 for 34.9: 35² ÷ 7 + √? ≈ 217.02. First, 35² = 1225. Then 1225 ÷ 7 = 175. So, 175 + √? ≈ 217.02, which means √? ≈ 42.02. Squaring both sides: ? ≈ (42.02)² ≈ 1764. Among the options, 1765 is the closest approximation.

Keep practicing — related questions