The area of a regular octagon is 25cm2. what is the area of a regular octagon with sides five times as large

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq

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.