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Answer:
2πr cm
Step-by-step explanation:
The circumference of a circle of radius r is ...
C = 2πr
For a radius of (r cm), the circumference is ...
A = 2π(r cm) = 2πr cm
For a radius of (2r cm), the circumference is ...
B = 2π(2r cm) = 4πr cm
Then the difference between the circumferences is ...
B -A = (4πr cm) -(2πr cm) = 2πr cm . . . . difference in circumference
Answer:

Step-by-step explanation:
we have

Find out the domain
we know that
The radicand must be greater than or equal to zero
so

The domain is the interval -----> [0,∞)
All real numbers greater than or equal to zero

Answer:
power and authority are concentrated in the central government and can take away people's right
Step-by-step explanation:
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