Areas Of Combinations Of Plane Figures
Chapter Name : Areas Related To Circles |
Sub Topic Code : 104_10_12_04_01 |
Topic Name : Areas Of Combinations Of Plane Figures |
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Sub Topic Name : Areas Of Combinations Of Plane Figures |
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Introduction
In real life we come across objects which are a combination of shapes hence it is necessary to know how to calculate aspects of different shapes in the right manner in order to know its area and perimeter.
Pre-Requisites:
Angles, basic trigonometric functions, areas of common shapes
Activity:
A shape made by all the pieces can be dissected and area can be found of each piece and then added up.
Real Life Question:
Does calculating area of different shapes come use in the manufacturing process of cars?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Area | Space enclosed within a shape. |
| Perimeter | Length of the outline of a shape. |
| Concentric circles | Circles with a common center. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Tangram puzzle | Different pieces are of different shapes and areas. |
Real life uses :
Calculating costs of construction.
Practical examples around us
| Examples | Explainations |
|---|---|
| Table tennis racket | The racket can be divided into 2 parts for calculating the surface area. The handle is rectangular while the net is circular. |
What you learn in Theory:
Areas of combinations of plane figures.
What you learn in Practice:
How to calculate the area of a shape by dividing it into basic common shapes.