C = 2 x pi x radius
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the question: a cylindrical tank has a circumference of 13.2, determine the diameter and the cross-sectional area of the tank?
You just need to find the circumference of the circular base (or top). It's the same thing. (Hint: use C=pi*diameter to find the circumference).
The ratio of C to D will equal pi. This is based on the known formula for the circumference of a circle. D = Diameter of the circular base of a cylinder (independent) C = Circumference of the circular base of a cylinder (dependent)
No!
The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.