WILL MARK BRAINLIST please help with #12

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

Math each whole number with a rational, exponential expression

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with