Digital ACT Math Practice Question #1463
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6-8-10 Pythagorean triple! Half-chord = 8, radius = 10 -> distance = 6.
The perpendicular from the center bisects the chord into two 8 cm segments. A right triangle is formed with hypotenuse r = 10 and leg = 8. The distance d = sqrt(10^2 - 8^2) = sqrt(100 - 64) = sqrt(36) = 6 cm....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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