What measure should Sam use to find out how much sand he needs to fill the box

Find the value of the cosine for angle a

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

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.