100 points
which of the following is radius of the circle?
a.)de
b.)ab
c.)ce

oh and idk how to add a picture so i need someone to me with that to

Are carpet coast $15 per square metre. the total delivery charge is $21 peter buys n squared metres of carpet what is the expression which represents the total cost in $

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

The area of a circle is equal to 1 dm². find the radius of the circle.