in order to increase the circumference of a circle from 12 pi cm to 18 pi cm by how much must the diameter increase?

Circumference = diameter x PI

To increase from 12 to 18 subtract:

18-12 = 6

The diaeter needs to increase by 6 cm

answear:

a

step-by-step explanation: a

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !