Edexcel IGCSE Maths 复习笔记 4.15.1 3D Shapes - Surface Area
Edexcel IGCSE Maths 复习笔记 4.15.1 3D Shapes - Surface Area What is surface area? A face is one of the flat or curved surfaces that make up a 3D shape The surface area of a 3D shape is the sum of ...