17. A circle with radius x is shown below. The diagram is not drawn to scale. 21 5 x What is the value of x? Round the answer to the nearest tenth. x = 11.6 x = 20.4 x = 15.5 x = 21.6
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Note: Figure not drawn to scale. In the circle above, point $A$ is the center and the length of arc $\widehat{B C}$ is $\frac{2}{5}$ of the circumference of the circle. What is the value of $x ?$
Find the radius of the circle in Figure $18 .$ Round to the nearest tenth.
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