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?
The diagram below shows a park divided into various regions. The number in each region is the region’s perimeter in km. What is the perimeter of the entire park? That is, what the length of the curve of the boundary?
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?
