Sector of a circle:
Perimeter 115.1 cm
radius 25.4 cm
Calculate the angle:
I get 259, but the answer says 145.
I used this formula:
Sector Perimieter = theta/ 360 * 2*pi*r
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You want the arc length.
But you are given the perimeter of the sector.
That includes the radius twice; substract 2r.
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