A circle with radius 1 is divided into 12 congruent regions, as shown below. What is the perimeter of a single region?
A unit circle is divided into 12 congruent regions, as shown. What is the perimeter of one of these regions?
A square with side length 1 is divided into 4 congruent right triangles, as shown, and a square in the center. Inscribe a circle in each triangle and in the center square. If all 5 circles are congruent, what is the radius of each circle?
In a circle of radius 1, an equilateral triangle is inscribed in the circle as shown. What is the area of the blue region?
Two congruent circles of radius 5 cm are drawn in such a way that one is 1 cm below the other . Find the area of red coloured region?
Seven circles, each with radius 1, overlap to form the composite figure shown below. Find the area of shaded region?
