Quick and explain. i'm offering 25pts (it's only worth 10pts) and brainliest answer. i've posted like 5 times me

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

What are the soultion(s) to the quadratic equation 40- x^2=0

The sum of two numbers is 12 and their difference is 18 what are the two numbers