Areaof the imageis.Compositionswith Dilations
Dilationscan be one of the transformationsin a composition,just as translations,reflections,and rotations
can.
Example 4
We will use two transformationsto movethe circlebelow.First we will dilatethe circlewith scalefactor. Then,we will translatethe new image unitsright and
unitsup.
We can call this a translation-dilation.a) Whatare the coordinatesof the centerof the final imagecircle?b) Whatis the radiusof the final image?
c) Whatis the circumferenceof the final image?d) Whatis the area of the originalcircle?