Question

find the circumference of a circle whose diameter is 3 centimetre​

Answer 1

Answer:

9.4285 cm

Step-by-step explanation:

Circumference of circle = 2$\pi$r = $\pi$D

= 3 x 22/7 = 66/7 cm = 9.4285 cm

Answer 2

Answer:

C≈9.42cm

Step-by-step explanation:

Using the formulas

C=2πr

d=2r

Solving forC

C=πd=π·3≈9.42478cm