length of the cuboid is two times of its breadth and four times of its height . if the volume of the cuboid is 64m^3. find the total surface area.​

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

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1