3 years ago

How do find the circumference of part of a circle

2 answers:

Maslowich3 years ago

5 0

Circumference of a circle is 2 x pi x r

3 0

Or just diameter * pi
My teacher used to say “duh pi” to be funny

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kakasveta [241]

Answer: $\bold{a_{n+1}=\dfrac{1}{2}a_n}$

Step-by-step explanation:

Term-to-term rule is also called the recursive rule.

The recursive rule for a geometric sequence is: $a_{n+1}=a_n\cdot r$ where

The common ratio (r) is the second term divided by the first term (which is the same ratio for each term divided by its previous term)

In the given sequence {64, 32, 16, 8, 4}, $r=\dfrac{32}{64}\quad \rightarrow \quad r=\dfrac{1}{2}$

So, the recursive rule is: ${a_{n+1}=a_n\cdot \dfrac{1}{2}$

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vagabundo [1.1K]

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