Mathematics, 18.01.2020 05:31, js3

Select all of the true statements. explain only why the statements are true.
a. pi is the area of a circle of radius 1.
b. pi is the area of a circle of diameter 1.
c. pi is the circumference of a circle of radius 1.
d. pi is the circumference of a circle of diameter 1.
e. pi is the constant of proportionality relating the diameter of a circle to its circumference.
f. pi is the constant of proportionality relating the radius of a circle to its area.

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Select all of the true statements. explain only why the statements are true.
a. pi is the area...