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.
Lamb Cooking Times. Types of cut: leg. Lamb requires 20 minutes per 500 grams/pound. Final internal meat temperature should be 75Â° Celsius / 165Â° Fahrenheit for medium, or 80Â° Celsius / 175Â° Fahrenheit for well done.