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Type: Multiple-Choice
Category: Pythagorean Theorem and Applications
Level: Grade 10
Standards: HSG-SRT.C.8
Author: nsharp1
Last Modified: 4 months ago

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Pythagorean Theorem and Applications Question

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Grade 10 Pythagorean Theorem and Applications CCSS: HSG-SRT.C.8

In the circle pictured, [math]O[/math] is the center of the circle and [math]bar{AD}[/math] is tangent to the circle. If [math]AD = 5 \ "cm"[/math] and [math]DO = 6.4 \ "cm"[/math], what is the length of the diameter of the circle, rounded to one decimal place? Hint: A line tangent to a circle is perpendicular to the radius of the circle at that point.
Circle ABCD
  1. 2.4 cm
  2. 4.0 cm
  3. 8.0 cm
  4. 16.2 cm
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