How many feet of fencing will you need to fence in a rectangular yard 20 feet by 30 feet, assuming that you use the wall of a 30-foot-long building for one side?

The service industry in the united states grew in the late 1800s. what was one effect of that growth? the number of people with jobs in factories as unskilled workers decreased. the number of people with jobs in factories as unskilled workers increased. the middle class grew as people took jobs as clerks, lawyers, and teachers. the middle class shrank as people left jobs as clerks, lawyers, and teachers.