Why did they pick these specific coordinates to make a line with?

Somone me i want to know what 18 hours out of 24 hours in a fraction

17 in long 1.3 ft wide and 8in high what is the volume

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?