MATH SOLVE

3 months ago

Q:
# If the blue radius below is perpendicular to the green chord and the segmentAB is 9 units long, what is the length of the chord?

Accepted Solution

A:

There's the obvious symmetry ultimately because the radii OA and OB are hypotenuses of congruent right triangles. We can just eyeball the figure and see AB=BC, at least approximately, so the full chord AC=9+9=18Answer: A. 18 units