If the surface area of a cube is 390cm squared, then which best describes the length of the side of the cube?

Mr. t has been dating his girlfriend for one year nine months and six days how many hours has mr. t been in a relationship

Would greatly appreciate these 3 answers

Which problem would you use the following proportion to solve for? 24/x=40/100 a. what is 40% of 24? b. what percent is 24 of 40? c. twenty-four is 40% of what number? d. forty percent of 24 is what number?