The circumference is about 3.14 (
) times bigger than twice the radius. Mathematically, this can be writted as 
, where C equals the circumference and r equals the radius, or 
where C equals the circumference and d equals the radius.
4 x 7 =?
2 answers:
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First, simplify
Second, multiply both sides by 5. / Your problem should look like: 6 = 2n
Third, divide both sides by 2. / Your problem should look like:
Fourth, simplify
Fifth, switch sides. / Your problem should look like: n = 3
Answer: n = 3