JAMB Mathematics 1980 Question 1

Question 1

Fractions, Decimals and Approximation

Find correct to three significant figures, the value of √(41830)

  1. A.205
  2. B.647
  3. C.2050
  4. D.6470
  5. E.64.7
Show the answer and explanation

Answer: A (205)

Explanation

200² = 40000 and 205² = 42025, so √41830 ≈ 204.5, which is 205 to three significant figures.