Mathematics Knowledge
Yesterday. I presented a question about the circumference of a circle.
What is the circumference of a circle if the radius is 4?
In working as an ASVAB tutor, I place a strong emphasis on the importance of knowing the formulas for area, circumference, volume, and surface area.
To be able to answer this question,
it is necessary to know the formula for the circumference of a circle.
The formula for circumference of a circle is C = pd = 3.14 x diameter
The radius is half of the diameter.
If the radius is 4, the diameter is 8.
p = 3.14
C = 8p = 8 x 3.14 = 25.12
Circumference = 25.12
Did you know how to figure out the circumference of the circle?
