If the side of one square is the diagonal of a second square, what is the ratio of the area of the first square to the area of the second?
The diagonals of a square are 4 meters long.
The side of this square is equal to the diagonal of a second square. find the side of the second square.
Two lines are drawn parallel to the diagonal of a square as shown in the first figure. Another set of parallel lines are drawn along the second diagonal to form a larger square of the area 61 cm2 as shown in the second figure, then the area of the original square is