Mathematics, 06.01.2022 06:50 lin550

4. Which of these pairs of quantities are proportional to each other for the quantities that are proportional, what is the constant of proportionality?
a. Radius and diameter of a circle
b. Radius and circumference of a circle
c. Radius and area of a circle
d. Diameter and circumference of a circle
e. Diameter and area of a circle

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