Volume Of Cube, Cuboid And Cylinder
Chapter Name : Mensuration |
Sub Topic Code : 104_08_11_07_03 |
Topic Name : Volume Of Cube, Cuboid And Cylinder |
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Sub Topic Name : Cylinder |
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Introduction
Volume of cuboid = Area of base x height. The same principle applies in the case of a cylinder also
Pre-Requisites:
About different solids- namely Cube, cuboid & Cylinder and their importance
Activity:
Take a hollow cylindrical object. Measure how many liters of water it can take. Convert it into cubic mts. ( 1 m3 = 1000 lts.). Now measure the full volume of the cylinder with your ruler. Are these two volumes same? Arrive at the formula for volume of a hollow cylinder
Real Life Question:
How much water can I fill in that cylindrical flask?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| How much water can I fill in that cylindrical flask? | How much water can I fill in that cylindrical flask? |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Cardboard, Circular disks | Measure the area of the circular discs. With the help of the cardboard, make a cylinder. Cover the top & bottom with the disks. Measure it’s volume |
Real life uses :
Large overhead tanks are sometimes cylindrical, especially when the availability of space is very less.
Places to visit :
Construction site, Temples, Super Markets
Practical examples around us
| Examples | Explainations |
|---|---|
| Pillar | Pillars (circular columns) in temples, any large houses are cylindrical in shape |
| Round chair | From the seat to the end of its legs, a round chair is cylindrical in shape |
What you learn in Theory:
Volume of a cylinder = Area of base x height = ?r2h
What you learn in Practice:
Cylindrical shape is very commonly used in large engineering machinery. Noting its volume is mandatory in such cases to calculate how much volume of the material it can hold