Topic Details (Notes format)

How to Use the Distance Formula (Coordinate Geometry)

Subject: Mathematics

Book: Maths Mastery

In a 2D coordinate plane, the distance between two points (x₁, y₁) and (x₂, y₂) is given by √[(x₂ – x₁)² + (y₂ – y₁)²]. For instance, the distance between (2, 3) and (6, 7) is √[(6 – 2)² + (7 – 3)²] = √(4² + 4²) = √32 = 4√2. Derived from the Pythagorean Theorem, the distance formula is pivotal in map reading, robotics pathfinding, or designing game environments. Familiarity with it ensures you can measure and compare positional relationships quickly and accurately in a variety of analytical tasks.

Practice Questions

What is the HCF of 48 and 180?

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If a:b = 5:7 and b:c = 6:11, what is a:c?

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What is the sum of the first 50 positive integers?

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What is the LCM of 15 and 20?

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A sphere has a radius of 7 cm. What is its volume?

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What is the area of a sector of a circle with radius 14 cm and central angle 90°?

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If x^3 - 3x^2 + 4 = 0, what is one root of the equation?

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A square is inscribed in a circle with a radius of 5 cm. What is the area of the square?

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The sum of the squares of two consecutive integers is 145. What are the integers?

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If 2x - 3 = 7, what is the value of x?

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