RUMUS :
[tex]kll = 2 \times \pi \times r[/tex]
[tex]luas = \pi \times {r}^{2} [/tex]
Cara :
Gambar 1
[tex]kll = 2 \times \pi \times r \\ kll = 2 \times 3.14 \times 20 \\ kll = 125.6cm[/tex]
[tex]luas = \pi \times {r}^{2} \\ luas = 3.14 \times {20}^{2} \\ luas = 3.14 \times 400 \\ luas = 1256 {cm}^{2} [/tex]
Gambar 2
[tex]kll = 2 \times \pi \times r \\ kll = 2 \times 3.14 \times 50 \\ kll = 314cm[/tex]
[tex]luas=\pi \times {r}^{2} \\ luas = 3.14 \times {50}^{2} \\ luas = 3.14 \times 250 \\ luas = 785 {cm}^{2} [/tex]
Semoga Memantu :D
Jangan Lupa Jadikan Jawaban Terbaik yaa :>
WANWAN SELALU MEMBANTUMU :^
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Verified answer
RUMUS :
[tex]kll = 2 \times \pi \times r[/tex]
[tex]luas = \pi \times {r}^{2} [/tex]
Cara :
Gambar 1
[tex]kll = 2 \times \pi \times r \\ kll = 2 \times 3.14 \times 20 \\ kll = 125.6cm[/tex]
[tex]luas = \pi \times {r}^{2} \\ luas = 3.14 \times {20}^{2} \\ luas = 3.14 \times 400 \\ luas = 1256 {cm}^{2} [/tex]
Gambar 2
[tex]kll = 2 \times \pi \times r \\ kll = 2 \times 3.14 \times 50 \\ kll = 314cm[/tex]
[tex]luas=\pi \times {r}^{2} \\ luas = 3.14 \times {50}^{2} \\ luas = 3.14 \times 250 \\ luas = 785 {cm}^{2} [/tex]
Semoga Memantu :D
Jangan Lupa Jadikan Jawaban Terbaik yaa :>
WANWAN SELALU MEMBANTUMU :^