Answer:
<h2>Yes the circumference is about times greater than their diameters</h2>
Step-by-step explanation:
We will approach this problem by doing a check
Say the diameter of a circle is 4 cm
Hence the radius is 3 cm
We know that the circumference is 

The circumference is about 3 time bigger than the diameter
Let us try another case say the diameter is 6 cm
The radius is 3 cm

Answer:
look the photo
Step-by-step explanation:
..0000000000000000
The answer is 2 due to the fact that 2 is even, and can be added more than once.
Half of the distance from one side, through the middle, to the other side.
circumference: 3.14*radius*2