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uranmaximum [27]
3 years ago
7

Need the answer soon please.

Mathematics
2 answers:
eimsori [14]3 years ago
8 0
I'm not too sure myself (cause Im a learning student myself at the age of 16 and I learn it in a completely different language) I cant really understand c) sorry for my poor english but I think I have gave you enough tips to do c)

kvv77 [185]3 years ago
4 0
Circumference (C) = 2 π r
                       122  = 2 π r
                        61/π = r
Answer to part (b): radius is 61/π ≈ 19.4

Diameter (d) = 2 r
                 d  = 2 (61/π)
                 d  = 122/π
Answer to part (a): diameter is 122/π ≈ 38.8


arc length (s) = r · Ф
THETA MUST BE IN RADIANS!
use the unit circle (or use the proportion π/180°) to discover that 30° = π/6

s = (61/π)·(π/6)
   = 61/6
Answer to part (c):arc length is 61/6




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