How much fabric you need to make different dresses

Yesterday i have received a mail in which a newbie sewing learner has complained that she doesn't know that how much fabric she require to make salwar suits, kurti and trouser. She has requested to bring a topic on fabric requirement. So here we are going to explain how much fabric you need to design your different type of dresses.In market, the fabric is available in 36" inches or 44" inches