What percentage of the circumference of the circle[b] is bold? [br][br][/b]What is the circumference of this circle? [br][br]Use your answer to the question above in conjunction with the details shown in the diagram to [b]determine the radius of this circle.[/b] [i] (Note: It's not 3). [/i]
What percentage of the area of the entire circle is shaded here? [br][br]What is the area of the entire circle? [br][br]Use your answer to the questions above in conjunction with the details shown in the diagram to [b]determine the radius of this circle.[/b] [i] (Note: It's not 3). [/i]