如图,正方形ABCD的对角线长为4厘米,将该正方形以每秒3厘米的速度向正上方移动2秒,到正方形A′B′C′D′的位置。这时,3O2Q6u'k1|*k-`*j8D3z7^
(1)该正方形扫过的面积是多少平方厘米?3O2Q6u'k1|*k-`*j8D3z7^
(2)图形ABCC′D′A′的面积是多少平方厘米?3O2Q6u'k1|*k-`*j8D3z7^
3O2Q6u'k1|*k-`*j8D3z7^
算式:提示)R5v3{,t*~(o2P,u2D+?:E)R3c6P4U)?.h9c3O2Q6u'k1|*k-`*j8D3z7^
答:该正方形扫过的面积是9e0Z3B(L+}1y;G平方厘米。3O2Q6u'k1|*k-`*j8D3z7^
算式:提示0F.\){9O5f9C;~5A)h3O2Q6u'k1|*k-`*j8D3z7^
答:图形ABCC′D′A′的面积是7g0V0K4K8O:d平方厘米。3O2Q6u'k1|*k-`*j8D3z7^