What is the area of the semicircle in this composite figure rounded to the nearest hundredth?

(explain how you got your answer )

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle