The function of the speaker it to talk about the topic for which s/he was engaged, or to the common interest of the group. If you mean an electronic device, a speaker is to â¦ amplify sound. 2 people found this useful.
How long it takes to cook a leg of lamb depends on how you well you  like the meat cooked. If you like it rare, it takes about 15  minutes per pound, if you like it medium i â¦ t takes about 25 minutes  per pound, and 30 minutes for well done.
Confidence votes 249. About 20-25 minutes per pound, so 2 hours for a 4 pound lamb, slightly longer if you want it more well done but be careful not to make it tough by overcooking.However, the lamb, to be at its tender best after cooking must be allowed to get to room temperature first.ooking a 2.8Kg leg of lamb will take approximately one and a half hours. First, pre-heat the oven to 390 degrees F. Place the lamb in a roasting pan and pour 3/4 cup of win â¦ e into pan. The lamb is seasoned accordingly.