Please answer correctly

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.