7 * 10 + 7 * 2 = 7(10 + 2) = 7 * 12.....this will get u the area 2 * 7 + 2 * 12 = 2(7 + 12) = 2(19)...this will get u the perimeter 7 + 12....this gets u neither 2(7 + 12).....this will get u perimeter 7 + 12 + 7 + 12......this will also get u perimeter 7 * 12....this will get u area