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Answer:
78.54
Step-by-step explanation:
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Answer:
41cm
Step-by-step explanation:
The circumference of a circle is 82π
Therefore r can be calculated as follows
2 × π × r= 82× π
2πr= 82π
r = 82π/2π
r= 41
Hence r is 41cm
D because a binomial means the expression has two: x2 and -4
