Information is given about a circle in the following table. Fill in the missing entries of the table, and show how you come up with the answer. r=radius, d=diameter,C= circumference,A=area. Give answers to two decimal places.
r d C A
231.04(symbol is pi)
15 (square root sign)
18 (symbol same as A)
A table is completed that allows for calculation of radius, diameter, circumference and area of a circle.