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Alex73 [517]
3 years ago
5

The circumstances of Z is 84cm. What is the length of XY (the mirror arc)

Mathematics
1 answer:
Serga [27]3 years ago
8 0

Answer:

B

Step-by-step explanation:

arc length = circumference × fraction of circle

                 = 84 ×\frac{90}{360} = 21 cm


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