What is the diameter of a circle with circumference 31.4cm?​

c = 10 cm

Step-by-step explanation:

The circumference formula is C = πd.  We want to solve this for the diameter, d:  

        C

d =

        π

Substituting 31.4 cm for d, we get:

       31.4 cm

d = = 10 cm, when 3.14 is used as an approximation for π/

         3.14

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;