Calculate using partial products:

A. 200 x 38.4
B. 900 x 20.7
C. 76.2 x 200

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?