# Chord MN

Chord MN of circle has distance from the center circle S 120 cm.
Angle MSN is 64°. Determine the radius of the circle.

Result

r =  141.5 cm

#### Solution:

$r = \dfrac{ 120}{ \cos(\dfrac{ 64 ^\circ }{2}) } = 141.5 \ \text{cm}$

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