Question 473379
find a sector's perimeter when given the radius and the angle?
radius - 4 units and angle 270. 
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Yes; find the perimeter of the circle:
P = 2(pi)r = 8(pi) units
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Find the arc of the sector:
x/270 = (8pi)/360
x = (3/4)(8pi)
x = 6pi
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Then the sector's perimeter is 4 + 4 + 6pi = 8+6pi units
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Cheers,
Stan H.
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