What happens to the volume of a cube if the length of an edge is doubled? it is multiplied by 4. it is multiplied by 6. it is multiplied by 8.

I'm confused on this could anyone me and show me what i need to do to solve it.

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)

Me n o w. i need t h i s. 10 points