An equilateral triangle and a square have the same perimeter. each side of the square measure 6cm. what is the length of each side of the triangle?

Find the area of an equilateral triangle with a side of 6 inches

In a column proof the right column states your reasons

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.