搜尋標籤: "surface area"

解釋小腸的結構如何幫助吸收食物。

1. Introduce Dissection Method and Fill Up Method for the calculation of the areas of polygons 2. Deduce and apply the formula for the area of a circle 3. Understand the volumes of cubes, cuboids,…

主持人首先剪開圓錐體紙杯來介紹弧和扇形，然後利用圓心角，扇形角，圓周和圓的面積，計算弧長和扇形的面積；並以演示數學家阿基米德在公元前二百多年的發現，以介紹圓錐、棱錐和球形的體積，以及直立圓錐和球形的表面面積。節目還示範如何運用上述的概念和公式解決日常生活問題或數學問題。

The concepts of arc and sector are first introduced by cutting open a cone cup. Then, students are guided to find the arc length and the area of a sector from the angle at the centre, angle of the…

Nicole and Johnny discuss and solve the problem related to the volume of frustum, and use the relationships between sides, surfaces and volumes of similar figures.

本資源講述兩位店務員發現及解決有關平截頭體的體積問題，並運用相似立體圖形的邊長、表面面積和體積之間的關係解決問題。