(1)根据题意填写下表,尽可能写出你能想到的所有答案。
序号 | 长/cm | 宽/cm | 高/cm | 长+宽+高/cm |
① | ||||
② | ||||
③ | ||||
④ | ||||
⑤ | ||||
⑥ | ||||
⑦ | ||||
⑧ |
(2)将这个长方体框架浇铸成长方体铁块,能浇铸成的铁块的表面积可能是多少平方厘米?
(3)在这个长方体框架浇铸成的长方体铁块中,表面积最大时的长、宽、高分别是多少厘米?
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2