Mwakio fenced a rectangular piece of land measuring 15m and 31m. He used six strands of wire, leaving a space of 5m for the gate. What was the total length of the wire used

Aresearch study is done to find the average age of all u. s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample