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.
Passionate about all things Australian. The general rule for lamb is, for every kilogram of weight, cook for an hour at 190 - 200 degrees Celsius, depending on the efficiency of your oven, or 180 degrees for a fan-forced oven. Thus, a 1.1 kg leg of lamb will take an hour and about ten minutes.he general rule for lamb is, for every kilogram of weight, cook for an hour at 190 - 200 degrees Celsius, depending on the efficiency of your oven, or 180 degrees for a fan-f â¦ orced oven. Thus, a 2kg leg of lamb will take two hours.