SOF International Mathematics Olympiad (IMO)
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IMO Level 1
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2024
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Sample
Find the distance between the points A(-1, -3) and B(5, 5).
Explanation
Explanation
Using the distance formula, AB = √[(x₂-x₁)² + (y₂-y₁)²] = √[(6)² + (8)²] = √[36 + 64] = √100 = 10 units.
PRO TIP
Re-check your working by substituting the answer back into the original question.
Related Questions
A shopkeeper marks a watch at ₹1,000 and allows a 10% discount. Even after the discount he earns a profit of 20% on the cost price. Find the cost price of the watch.