The radius of a circle is 15. Using π, which equation expresses the ratio of the circumference to the diameter of a circle?

radius of circle = 15

circumference of circle  = 2πr

                                        = 2*22/7*15

                                        = 44/7*15

                                        = 660/7

                                       = 94.28

diameter of circle = 2r

                              = 2(15)

                              = 30

RATIO = 94.28:30

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

29.5977692753

step-by-step explanation: