Find the length of a circle if its diameter is 13 cm
| February 5, 2021 | education
The circumference is equal to twice the product of the radius and π.
Formula for calculating the circumference in terms of the radius:
C = 2πr,
Where
C – circumference,
r is the radius of the circle.
The radius of a circle is equal to half of its diameter:
r = d / 2;
r = 13/2;
r = 6.5 cm;
C = 2 · 3.14 · 6.5 = 40.82 cm.
Answer: The circumference is 40.82 cm.
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