题目

一种圆柱形固体胶，底面周长是6.28厘米，这种固体胶的体积是多少立方厘米？ 答案：【答案】21.98立方厘米【解析】根据题意，圆柱的体积＝底面积×高，所以先要通过底面周长求出底面半径，进而求出底面积，最后用底面积×高得出体积。6.28÷3.14÷2＝1（厘米）3.14×1×7＝21.98（立方厘米）答：这种固体胶的体积是21.98立方厘米。— How much does the meal cost?— Forget it. It will be my ________. All you need to do is to enjoy it.A.turnB.dutyC.treatD.honor