Plz help

its not the one with the x

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

What is the lcm of 16 and 40 ? 24 and 40 ?