How do you find the volume of a shipping box that is 3 inches by 12 inches by 18 inches?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

What is the perimeter of an equilateral triangle if each side is (x+3)?

Determine if this is a solution to the system