Evaluate 64.764\(^2\) – 35.236\(^2\) correct to 3 significant figures

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Mathematics JAMB 1997

Evaluate 64.764\(^2\) – 35.236\(^2\) correct to 3 significant figures

  • 2960
  • 2950 checkmark
  • 2860
  • 2850

The correct answer is: B

Explanation

(64.764 - 35.236)(64.764 + 35.236)

= 29.528 x 100

= 2950 to 3 sig. fig.

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