work out the length of AB. give your answer to 3 significant figures.
Answer:
Distance formula = √(x₂ - x₁)² + (y₂ - y₁)²
(x₁, y₁) = (1, 7) and (x₂, y₂) = (10, 3)
AB = √(10 - 1)² + (7 - 3)²
= √9² + 4²
= √81 + 16
= √97
= 9.85