If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.? = 120°, A = 30 square meters, r = ?

A. 5.6 m
B. 125.6 m
C. 31.4 m
D. 5.35 m


Answer: D

Mathematics

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