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an arc of length 10 meters is formed by a centeral angle A on a circle of radius 4. The meause of A in degrees (to two decimal places) is __________.

Respuesta :

The circumference of a circle is [tex]2\pi r[/tex] and it coresponds to a 360 degree angle.

The circumference of the circle is 2*4*pi=8pi m=25.12m

25.12m......360 degrees
10 m.........x degrees
x=10*360/25.12=143.31 degrees

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