The drawing represents a large circle with center at point O.[br]Inside the big circle, a concentric circle and four congruent circles are constructed symmetrically on an auxiliary circle.The following information is given:[br]O is the center of the concentric circles,the radius of the large circle is 10 cm,the radius of each small circle is 3 cm.
Find the diameter of the large circle.
Find the circumference of the large circle.
Calculate the area of the large circle.
What is the relationship between the four inner circles?
The circles are congruent
What type of circles have the same center O?
They are concentric circles.