"Surface Area of ​​a Cylinder" PPT download

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"Surface Area of ​​a Cylinder" PPT download

Part One: Analysis of the New Course

A cylindrical iron bucket without a lid (pictured below).

(1) How many square centimeters of iron sheet should be used to make this bucket?

3.14×30×35=3297 (square centimeters)

3.14×(30÷2)2=706.5 (square centimeters)

3297+706.5=4003.5 (square centimeters)

Answer: At least 4003.5 square centimeters of iron sheet are needed to make this bucket.

(2) According to this calculation, how many square meters of iron sheet are needed to make 50 buckets?

4003.5×50=200175 (square centimeters)

200175 square centimeters = 20.0175 square meters

Answer: At least 20.0175 square meters is required.

Surface area of ​​a cylinder PPT, part 2: practice

1. Below is a birthday cake, and the floor is a plastic board. (Unit: cm)

(1) Choose a suitable cake box for the birthday cake.

(2) How much cardboard is needed to make this birthday cake?

2. Take a cylindrical wooden pier (as shown on the right) and paint the top and sides of it. What is the area of ​​the painted part?

3. Build a cylindrical biogas pool with a bottom diameter of 3 meters and a depth of 2 meters. The inner wall and bottom of the pool need to be plastered with cement. How many square meters will the cement area cover?

4. Master Li used tin sheets to make a chimney with a diameter of 1 decimeter and a length of 1 meter. Approximately how many square meters of tinplate are needed to make 25 sections? (Seams are calculated as 1 cm)

Keywords: Free download of Hebei Education Edition mathematics PPT courseware for sixth grade volume 2, surface area of ​​cylinder PPT download, .PPT format;

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"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...

"Surface Area of ​​a Cylinder" Cylinder and Cone PPT Courseware 7:

"Surface Area of ​​a Cylinder" Cylinder and Cone PPT Courseware 7 Teaching Objectives 1. Understand the meaning of lateral area and surface area of ​​a cylinder. 2. Understand how to calculate the lateral area and surface area of ​​a cylinder. 3． Be able to flexibly use the relevant knowledge of surface area and side area to solve some practical...

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Update Time: 2024-11-20

This template belongs to Mathematics courseware Hebei Education Edition Sixth Grade Mathematics Volume 2 industry PPT template

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