"Area of ​​a Circle" Circle PPT Courseware

Description

"Area of ​​a Circle" Circle PPT Courseware

The rate of progress between two adjacent area units is ( )

1 square meter = ( ) square decimeter

1 square decimeter = ( ) square centimeter

Knowing what conditions can we find the area of ​​a circle?

You can find the area of ​​a circle if you know the radius, diameter or circumference.

Do it:

Find the area of ​​the circle according to the conditions given below.

(1), radius 2 decimeters

(2), diameter 10 cm

area of ​​circle

1. Area of ​​a circle: the size of the plane occupied by the circle

2. The calculation formula for the area of ​​a circle: S= πr 2

3. The area of ​​the circle can be calculated by knowing the radius, diameter and circumference of the circle.

4. The formula for calculating the area of ​​a ring: πR2-πr2 or π(R2-r2)

Keywords: circle courseware PPT, area of ​​circle courseware PPT, Jiangsu Education Edition fifth grade mathematics second volume PPT courseware download, fifth grade mathematics slide courseware download, circle PPT courseware download, area of ​​a circle PPT courseware download, .PPT format

For more information about the "Area of ​​a Circle" PPT courseware, please click the "Area of ​​a Circle ppt circle ppt" tag.

"Area of ​​a Circle" PPT courseware on the circumference and area of ​​a circle:

"Area of ​​a Circle" Circumference and Area of ​​a Circle PPT Courseware Teaching Objectives 1. Experience the process of estimating the area of ​​a dart board, hands-on operations, discussions, etc. to explore the formula for calculating the area of ​​a circle. 2. Understand and master the formula for the area of ​​a circle, and be able to use the formula to calculate correctly. 3. Experience the circle...

"Area of ​​a Circle" Circle PPT Courseware 6:

"Area of ​​a Circle" Circle PPT Courseware 6 The calculation of the area of ​​a circle has a wide range of applications in life. Please look at the following example: To make a cylindrical bucket, Master Li needs a round piece of tinplate with a diameter of 40 cm to make the bottom of the bucket. This kind of iron sheet costs 50 yuan per square meter..

"Area of ​​a Circle" Circle PPT Courseware 5:

"Area of ​​a Circle" Circle PPT Courseware 5 The spray radius is 3m. If the sprinkler head rotates once, how much area of ​​farmland can be irrigated? 3.143=3.149=28.26 (m) Answer: It can irrigate 28.26 square meters of farmland. The circumference of the circular sheepfold was measured to be 125.6m. The face of this sheepfold...

File Info

Update Time: 2024-10-28

This template belongs to Mathematics courseware Jiangsu Education Edition Fifth Grade Mathematics Volume 2 industry PPT template

Preview