Question

circumference of a circle with diameter 2x​

Answer 1

Step-by-step explanation:

We know the formula, circumference = πd

So, d=2 cm, π=3.14

Circumference of the circle =3.14×2

=6.28 cm

Answer 2

The area of a circle is equal to the square of its radius times pi. The circumference of a circle is equal to the diameter times pi. ... By contrast, the circumference will only double -- from 12.56 to 25.12 because you do not square the radius (or diameter) -- you just multiply it by pi.