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.
Internal Temperatures for Bone-In Leg of Lamb. All of these cooking times take into account the fact that we broil the lamb first to sear it. They also assume a resting period of at least 15 minutes, during which the lamb actually continues cooking internally.