Question

If r is taken as the radius and P as the perimeter of a circle.
(a) Write the relation between P and r as an equation.
(b) Is perimeter of a circle proportional to its radius? If so, what is the proportionality
constant.
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Answer 1

Step-by-step explanation:

a) P= 2πr

R= r

therefore, r= P/2π

b) The perimeter is proportional to the radius as increase in radius increases the perimeter.

The proportionality constant is 2π