kungfu math p3 slide13 (perimeter)pdf
DESCRIPTION
TRANSCRIPT
![Page 1: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/1.jpg)
• calculation of the perimeter of
∗ rectilinear figure
∗ rectangle
∗ square
What will we learn today?
Measurement Perimeter
![Page 2: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/2.jpg)
What is Perimeter?
The perimeter is the total distance around the
outside of a 2D shape.
![Page 3: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/3.jpg)
Perimeter of Simple Shapes
There are special formulas for certain shapes:
For example:
What is the perimeter of this rectangle?
5cm
3cm
![Page 4: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/4.jpg)
Let’s recall some concepts. Length is the longest dimension of an object.
Breadth is the extent or measure of how broad or wide something is.
5cm
3cm
Length
Breadth
![Page 5: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/5.jpg)
Perimeter of Simple Shapes
There are special formulas for certain shapes:
For example:
What is the perimeter of this rectangle?
Perimeter = Length + Length + Breadth + Breadth
5cm
3cm 3cm
5cm
![Page 6: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/6.jpg)
Try this out!
What is the perimeter of the square?
![Page 7: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/7.jpg)
Try this out!
What is the perimeter of this square?
Let’s recall the formula:
Perimeter = Length + Length + Breadth + Breadth
![Page 8: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/8.jpg)
Try this out!
What is the perimeter of this square?
A square has 4 equal sides.
Therefore,
Perimeter = Length + Length + Length + Length
= 4 x Length
![Page 9: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/9.jpg)
Try this out!
What is the perimeter of the rectangle?
4 cm
10 cm
![Page 10: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/10.jpg)
Try this out!
What is the perimeter of the rectangle?
Let’s recall the formula:
Perimeter = Length + Length + Breadth + Breadth
4 cm
10 cm
![Page 11: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/11.jpg)
Try this out!
What is the perimeter of the rectangle?
Let’s recall the formula:
Perimeter = Length + Length + Breadth + Breadth
4 cm
10 cm
4 cm
10 cm
![Page 12: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/12.jpg)
Try this out!
What is the perimeter of the rectangle?
Let’s recall the formula:
Perimeter = 10 + 10 + 4 + 4
= 28 cm
4 cm
10 cm
4 cm
10 cm
![Page 13: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/13.jpg)
Summary
You can only find perimeter when the lengths and breadths have the same units.
For example,
the length is 5 cm and the breadth is 4 cm.
The perimeter will be 18 cm.
![Page 14: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/14.jpg)
Summary
You can only find perimeter when the length and breadth have the same units.
For example,
the length is 5 m and the breadth is 4 m.
The area will be 18m.
![Page 15: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/15.jpg)
Are you ready to try out the questions?
![Page 16: Kungfu math p3 slide13 (perimeter)pdf](https://reader033.vdocuments.mx/reader033/viewer/2022051209/5480c8945906b5046d8b459c/html5/thumbnails/16.jpg)
Visit kungfumath.sg today!