The circular region bounded above by y=sqrt 9-x^2 and below by y=-sqrt 9-x^2 is the base of a solid whose cross sections perpendicular to the x-axis are equilateral triangles. The volume of the solid is

What numbers are included in the set of integers? what numbers are not included?

In the figure below, triangle rpq is similar to triangle rts. what is the distance between p and q? a. 24 b. 42 c.50 d. 54

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years