Math question: In circle theorem, if a chord is perpendicular to a radius, what is the relationship between the length of the chord and the distance from the center of the circle to the chord?
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What is the simplified value of (2^3) * (3^2) * (5^0) - (6^1) / (4^2)?
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What is the sum of the mixed number 3 1/2 and the factorized number 18?