I think the answer is 78 because more usually mean addition so 57+21=78
Answer:
10 hours to readm240
Step-by-step explanation:
4x = 2π when x = π/2
The period is π/2.
Answer:
70
Step-by-step explanation:
The formula for finding the volume of a cube is

, where s is the side length.
The formula for a cube with each side length doubled is

, or 8<span>s.
</span><span>If all the dimensions of a cube are doubled, then the new volume is
eight times greater.</span>