A garden is shaped in the form of a regular heptagon (seven sided), MNSRQPO. A circle with centre T and radius 25m circumscribes the heptagon as shown in the diagram below. The area of triangle MSQ is left for a children’s playground, and the rest of the garden is planted with flowers. Find the area of the garden planted with flowers.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.