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Wesley is approximately 25 miles away from the place he started.
Say, Wesley started from point A, he rowed his boat in north direction, covered 18 miles and stopped at B. From B, he again rowed 18 miles towards east. Finally, he stopped at position C.
From Pythagoras theorem, we can find, AC.
AC² = AB² + BC²
⇒ AC² = 18² + 18²
⇒ AC² = 2×18²
⇒ AC = √2×18 ≈ 25 miles.
Say, Wesley started from point A, he rowed his boat in north direction, covered 18 miles and stopped at B. From B, he again rowed 18 miles towards east. Finally, he stopped at position C.
From Pythagoras theorem, we can find, AC.
AC² = AB² + BC²
⇒ AC² = 18² + 18²
⇒ AC² = 2×18²
⇒ AC = √2×18 ≈ 25 miles.