Question

Find the diameter of a circle whose circumference is 28.6 cm.​

Answer 1

Step-by-step explanation:

circumference of circle = 2πr

28.6 = 2(22/7)r

28.6 = 44/7r

28.6(7/44) = r

r = 200.2/44

r = 4.55

therefore, diameter = 2(radius)

diameter = 2(4.55)

diameter = 9.1 cm