Luas lingkaran
7
r Dengan pendekatan luas segitiga
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Transcript of Luas lingkaran
![Page 1: Luas lingkaran](https://reader030.fdokumen.site/reader030/viewer/2022020208/55ad6e291a28abb04b8b47a6/html5/thumbnails/1.jpg)
r
Dengan pendekatan luas segitiga
![Page 2: Luas lingkaran](https://reader030.fdokumen.site/reader030/viewer/2022020208/55ad6e291a28abb04b8b47a6/html5/thumbnails/2.jpg)
1. Bagilah lingkaran menjadi 16 juring sama besar
2. Potonglah juring-juring tersebut
![Page 3: Luas lingkaran](https://reader030.fdokumen.site/reader030/viewer/2022020208/55ad6e291a28abb04b8b47a6/html5/thumbnails/3.jpg)
![Page 4: Luas lingkaran](https://reader030.fdokumen.site/reader030/viewer/2022020208/55ad6e291a28abb04b8b47a6/html5/thumbnails/4.jpg)
lingkarankeliling4
1
jarijari −4
![Page 5: Luas lingkaran](https://reader030.fdokumen.site/reader030/viewer/2022020208/55ad6e291a28abb04b8b47a6/html5/thumbnails/5.jpg)
lingkarankeliling4
1
jarijari −4
tinggialasSegitigaLuas ××=2
1
rlingkkel ×××⇔ 4.4
1
2
1
rd ×××××⇔ 44
1
2
1 π
rd ×××××⇔ π44
1
2
1
rd ×××⇔ π2
1
rr××⇔ πr
d ××⇔2
π
2r×⇔ π
![Page 6: Luas lingkaran](https://reader030.fdokumen.site/reader030/viewer/2022020208/55ad6e291a28abb04b8b47a6/html5/thumbnails/6.jpg)
r
Jadi luas lingkaran dengan jari-jari r
2r×π
![Page 7: Luas lingkaran](https://reader030.fdokumen.site/reader030/viewer/2022020208/55ad6e291a28abb04b8b47a6/html5/thumbnails/7.jpg)
r
Jadi luas lingkaran dengan jari-jari r
2r×π