题目: 一张《喜羊羊与灰太狼之虎虎生威》的光盘内圆直径是2厘米,外圆直径是12厘米,这张光盘的面积是______平方厘米. 答案: 3.14×[(12÷2)2-(2÷2)2],=3.14×(36-1),=3.14×35,=109.9(平方厘米).答:这张光盘的面积是109.9平方厘米.故答案为:109.9.
题型:选择题 Mr. Smith was so angry at all ________ Robert was doing _________ he walked out angrily. A.that; whatB.that; thatC.which; whichD.what; that 查看答案