What is the answer for this function f(r)=3.14 r square. what is f(3)?

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

What term best describes a line ans a point that lie in the same plane

The only way to identify an intercept is as an ordered pair. true false