| Category | Format | Size |
|---|---|---|
| Jiangsu Education Edition Sixth Grade Mathematics Volume 2 | pptx | 6 MB |
"Surface Area of a Cylinder" Cylinder and Cone PPT Courseware 2
Description
"Surface Area of a Cylinder" Cylinder and Cone PPT Courseware 2
1. What is the surface area of an object?
The total area of all faces surrounding a solid figure is called the surface area of the object.
2. Can you calculate the surface area of which of the following figures?
A cube has 6 faces, all of which are square. The 6 faces are all equal in area; there are 12 edges, and their lengths are also equal; and there are 8 vertices.
Surface area of cube = edge length × edge length × 6
A cuboid has 6 faces, all of which are rectangles (note: in a special cuboid, one set of faces is a square). The areas on opposite sides are all equal; there are 12 edges that can be divided into three groups of length, width and height, each group has 4 equal lengths; there are 8 vertices.
Surface area of cuboid = (length × width + length × height + width × height) × 2
practise
1. Make a cylindrical gasoline barrel with a bottom diameter of 0.6 meters and a height of 1 meter. Approximately how many square meters of iron sheet are needed to make such a gasoline barrel?
2. To make a cylindrical ventilation pipe, 2 meters long and with a radius of 5 cm. How many square meters of iron sheet is required to make such a ventilation pipe?
3. A cylindrical gasoline barrel, measured from the inside, has a base diameter of 40 cm and a height of 1.2 m. How much iron sheet is needed to make this oil drum?
4. There is a cylinder 3.5 meters long, and its base circumference is 12.56 meters. If you paint the side of this cylinder. How many square meters will be painted?
5. A cylindrical chimney has a bottom diameter of 8 cm and a length of 1.5 meters. How many square meters of tinplate is required to make a chimney with 1,000 sections?
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For more information about the "Surface Area of a Cylinder Cylinder and Cone" PPT courseware, please click the "Surface Area of a Cylinder ppt Cylinder and Cone ppt" tag.
"Surface Area of a Cylinder" PPT download:
"Surface Area of a Cylinder" PPT Download Part One: New Lesson Analysis A cylindrical iron bucket without a lid (as shown below). (1) How many square centimeters of iron sheet should be used to make this bucket? 3.143035=3297 (square centimeters) 3.14 (302)2=706.5..
"Surface Area of a Cylinder" PPT courseware:
"Surface Area of a Cylinder" PPT Courseware Part One: Collaborative Exploration There are countless heights of a cylinder, and the lengths of the heights are all equal. Cooperation and communication in a group of four people: ① What shape is there when the side of the cylinder is expanded along the height? ②Which does the length and width of the expanded figure correspond to that of the cylinder?
"Surface Area of a Cylinder" PPT:
"Surface Area of a Cylinder" PPT Part One Content: Teaching Objectives 1. Be able to flexibly use the calculation method of the surface area of a cylinder to solve some simple problems in life according to specific situations, so that students can feel the close connection between mathematics and life. 2. Through imagination and operation Waiting for life...
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Update Time: 2024-07-06
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