Which piece of information do you not need to find the volume of a cylinder?

Name the most appropriate metric unit for each measurement like the mass of cow

Plz hurry evaluate the expression a+b where a=8 and b=19

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?