If in each square, the blue and red areas are equal then find out the ratio of radius between big and small circle?

2 times

If side of square is a and radius of bigger circle R, smaller circle - r, then a^2/2=pi*r^2=pi*R^2/4 => R=2r

If blue rectangle area is equal to the sum of 3 squares areas combined as in image, what is relation between a,b,c & d?

ABCD is a square with side length R. Find the radius of the red circle in terms of R?

A circle contains 4 identical squares, as shown below. If each square has a side length equal to 2, what is the radius of the circle?

If you knew that the radius of the big circle and the big arcs is 5 cm, what is the area of the yellow region?

There are 10 squares that are constructed as shown in the diagram. Find the difference between blue and red angle in degrees.