题目

任务型阅读。看图表完成下列句子，每空词数不限。 注：villages：农村 1. We asked many teenagers about _________________ at home and made the diagram(表格) of the survey result 2. There are ____________________ kinds of chores in the diagram. 3. Half of the teenagers are from ______________, and the others come from villages. 4. We found that most teenagers from the villages like _________________. 5. ___________________________ do more chores than teenagers from cities.在中，角,,的对边是,,，且.（Ⅰ）求的值；（Ⅱ）若，求面积的最大值.