题目

儿童节,爸爸送给高兴一个圆锥形的玩具(如图)。如果要用一个长方体的盒子包装它,这个盒子的表面积至少多少平方厘米? 答案:解:6×6×2+6×10×4 =72+240 =312(平方厘米) 答:这个盒子的表面积至少312平方厘米。Only when he conquered his inner fear a newfound sense of accomplishment and self-confidence.A.did he gainB.he had gainedC.he gainedD.has he gained
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