1： 表面积 3.14x2x2.4x4+3.14x2.4×2 =3.14x2x2.4x4+3.14x5.76×2 =60.288+36.1728 =96.4608（平方分米） 体积 3.14x2.4×4 =3.14x5.76×4 =72.3456（立方分米） 2：⑴3.14x5x2x2+3.14x5 =3.14x5x2x2+3.14x25 =62.8+78.5

1： 表面积 3.14x2x2.4x4+3.14x2.4×2 =3.14x2x2.4x4+3.14x5.76×2 =60.288+36.1728 =96.4608（平方分米） 体积 3.14x2.4×4 =3.14x5.76×4 =72.3456（立方分米） 2：⑴3.14x5x2x2+3.14x5 =3.14x5x2x2+3.14x25 =62.8+78.5