HELP ASAP PLEASE, this is the last question i promise T^T
WILL MARK BRAINLIEST AND GIVE POINTS

find the perimeter of a circular sector if the diameter of its circle equals 10cm and its arc length = 10cm. equals = ......... cm.

a) 10
b) 20
c) 30
d) 40

an explanation for future reference would be greatly appreciated, thank youuu <33
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