permukaan kubus dan kuboid = faces of a cube and cuboid All 6 faces of a cube are squares. A cuboid has rectangle faces, and some cuboids also have square ends. The shapes of the faces tell the two apart. Example: a cuboid with square ends has 2 squares and 6 - 2 = 4 rectangles. Watch out: one face is not enough; turn the shape around and look at all 6 faces.
Langkah 2
Permukaan piramid
Piramid tapak segi empat sama mempunyai satu segi empat sama dan empat segi tiga.
permukaan piramid = faces of a pyramid A pyramid with a square base has 1 square and 4 triangles. The tips of the four triangles all meet at the top vertex. Example: a pyramid with a triangle base has 1 triangle at the bottom and 3 triangles around it, giving 1 + 3 = 4 faces. Watch out: the base of a square pyramid is a square, even when the shape is turned upside down.
Langkah 3
Permukaan silinder dan kon
Silinder mempunyai dua bulatan dan satu segi empat tepat apabila dibuka. Kon mempunyai satu bulatan dan satu bahagian melengkung.
silinder → 2 ○ + 1 ▭ · kon → ○ + sektor
permukaan silinder dan kon = 圆柱和圆锥的面 把圆柱剪开摊平，会得到 2 个圆形和 1 个长方形，长方形卷起来就是侧面。圆锥摊开是 1 个圆形和 1 个扇形。 例子：纸卷筒是圆柱，上下各盖一个圆纸片，用了 1 + 1 = 2 个圆形。 注意：圆锥只有 1 个圆，不要以为和圆柱一样有 2 个。
permukaan silinder dan kon = faces of a cylinder and cone Opened up and flattened, a cylinder gives 2 circles and 1 rectangle; the rectangle rolls up to form the side. A cone opens into 1 circle and 1 curved fan shape. Example: a paper tube is a cylinder, and capping both ends uses 1 + 1 = 2 circles. Watch out: a cone has only 1 circle, not 2 like a cylinder.
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Cuba sendiri
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Bentuk asas bagi semua permukaan kubus ialah…
bentuk asas permukaan = 面的基本形状 题目问：正方体每一个面是什么平面形状。方法：想象把正方体的一个面印在纸上，数一数印出来的形状有几条边，再看边长是不是一样。 例子：三角形有 3 条边，两个三角形共有 3 + 3 = 6 条边。 注意：题目说“semua permukaan”，表示每一个面的形状都相同。
bentuk asas permukaan = basic shape of the faces The question asks which flat shape every face of a cube has. Imagine printing one face on paper, count the sides of the print, and check whether those sides are equal. Example: a triangle has 3 sides, so two triangles have 3 + 3 = 6 sides. Watch out: semua permukaan means all the faces, so every face has the same shape.
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Cuba sendiri
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Piramid tapak segi empat sama mempunyai empat…
piramid tapak segi empat sama = 底面是正方形的四角锥 题目问：四角锥除了底面，另外 4 个侧面是什么形状。线索：侧面从底边往上斜，越往上越窄，最后全部在顶点相遇。 例子：底面有 4 条边，每条边连着一个侧面，所以侧面有 1 + 1 + 1 + 1 = 4 个。 注意：底面和侧面不一样，题目问的是侧面。
piramid tapak segi empat sama = square-based pyramid The question asks about the shape of the 4 side faces, not the base. Clue: each side face narrows upward and they all meet at the top vertex. Example: the base has 4 edges and each edge holds one side face, so there are 1 + 1 + 1 + 1 = 4 side faces. Watch out: the base and the side faces are different; this question is only about the sides.
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Ingat: permukaan kubus dan kuboid; permukaan piramid; permukaan silinder dan kon.
