A circle of white daisies is planted in Hillsdale's central park. The circle has a diameter of 4 yards. What is the circle's 원둘레?

해법

A c i rc l e o f w hi t e d ai s i es i s pl an t e d in H i ll s d a l e^{'} s ce n t r a l p a r k . T h e c i rc l e ha s a d iam e t er o f 4 y a r d s . Wha t i s t h e c i rc l e^{'} s c i rc u m f ere n ce ?

c i rc u m f ere n ce : 4 π y d

소수

12.56637 \dots

솔루션 단계

Given:

d iam e t er : 4 y d

주어진 원 둘레

d = 4 : C = 4 π

c i rc u m f ere n ce : 4 π y d