Question #4a948

1 Answer
harsh s.
Aug 9, 2017

see below

Explanation:

There is no theorem to prove here because it was generally observed (by some historian) that the circumference of a circle is directly proportional to its diameter, so

#Cpropd#

and the proportionality constant was given a symbol #pi#, hence

#C= pi*d#

#=>pi=C/d#

where, #d# is the diameter of circle.

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