Given
a) circle with circumference of 1 mile
b) circle with circumference of 12 inches
Find
the respective diameters
Solution
The circumference (C) of a circle in terms of diameter (d) is given by
... C = π·d
Dividing by pi gives an expression for the diameter in terms of the circumference:
... d = C/π
a) d = (1 mile)/π ≈ 0.3183 mile in diameter
b) d = (12 inches)/π ≈ 3.820 inches in diameter