What are Shapes?
A shape in geometry is defined as the figure encompassed by the boundary. The boundary is formed by combining lines, points, and curves. In general, there are two different categories of geometric shapes, including:
- 2 Dimensional Shapes (2 D)
- 3 Dimensional Shapes (3 D)
Shapes that can be drawn on a piece of paper are known as 2-dimensional shapes, also called flat shapes. The shapes have two dimensions only i.e. length and breadth, no thickness. Examples of 2D shapes are circles, rectangles, squares, triangles, eclipses, parallelograms, hexagons, pentagons, and so on.
3D shapes are also known as solid shapes, they have 3 dimensions such as length, breadth, and thickness. 3-D shapes examples are cones, cylinders, spheres, cubes, cuboids, hemispheres, prism, and so on.
| Shape | Types | Dimensions |
|---|---|---|
| Square | 2 D | Side |
| Rectangle | 2 D | Length and Breadth |
| Circle | 2 D | Radius |
| Cube | 3 D | Length = Breadth = Height |
| Cuboid | 3 D | Length, Breadth, and Height |
| Cylinder | 3 D | Radius of Base, Height |
| Sphere | 3 D | Radius |
| Right Circular Cone | 3 D | Slant Height and Radius of Base |
Area – Aptitude Questions and Answers
Surface area topic is an integral part of various competitive examinations in India. They are an important part of Geometry which is usually asked in Quantitative Aptitude. Being able to understand and solve area questions quickly and accurately is essential to help you score well in exams.
This article aims to provide you with information on how to calculate the surface area of various 2D and 3D shapes, some important concepts, shortcuts, and tricks related to Areas along with practice questions and their detailed solutions.
Table of Content
- What are Shapes?
- What is Area?
- Tips to Prepare for Surface Area Questions
- Surface Area Questions and Answers