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A right triangle has two perpendicular sides of lengths 3 units and 4 units. Which value equal to the length of its hypotenuse can be constructed on the number line?

Answer and explanation

Correct answer: 5

By the Pythagorean theorem, the hypotenuse is \(c=\sqrt{3^2+4^2}=\sqrt{25}=5\) units. Therefore, the point representing 5 can be constructed on the number line by marking a distance of 5 units from 0. The values 6, 7, and 12 are not the hypotenuse of this triangle. Exam tip: For perpendicular sides \(a\) and \(b\), use \(c=\sqrt{a^2+b^2}\).

Related tags

Number LineReal NumbersGeometric ConstructionPythagorean TheoremRepresenting Real Numbers On The Number LinePolynomialsMathematicsClass 10 Mcq

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