Jawaban:
Luas = 462 cm²
Keliling = 88 cm²
Penjelasan dengan langkah-langkah:
Luas Lingkaran
[tex]\pi {r}^{2} [/tex]
Keliling lingkaran
[tex]2\pi{r}[/tex]
maka
Menghitung Luas lingkaran
Lingkaran besar
[tex] = \frac{22}{7} \times 14 \times 14 \\ = 22 \times 2 \times 14 \\ = 44 \times 14 \\ = 616 \: {cm}^{2} [/tex]
Lingkaran kecil
[tex] = \frac{22}{7} \times 7 \times 7 \\ = 22 \times 1 \times 7 \\ = 22 \times 7 \\ = 154 \: {cm}^{2} [/tex]
Total Luas
[tex] = (\frac{1}{2} \times 616 )+ 154 \\ =308 + 154 \\ = 462 \: {cm}^{2} [/tex]
Menghitung Keliling Lingkaran
[tex] = 2 \times \frac{22}{7 } \times 14 \\ = 2 \times 22 \times 2 \\ = 4 \times 22 \\ = 88 \: cm[/tex]
[tex] = 2 \times \frac{22}{7} \times 7 \\ = 2 \times 22 \times 1 \\ = 2 \times 22 \\ = 44 \: cm[/tex]
Total Keliling
[tex] = ( \frac{1}{2} \times 88) + 44 \\ = 44 + 44 \\ = 88 \: cm[/tex]
maaf jika salah, semoga membantu
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Jawaban:
Luas = 462 cm²
Keliling = 88 cm²
Penjelasan dengan langkah-langkah:
Luas Lingkaran
[tex]\pi {r}^{2} [/tex]
Keliling lingkaran
[tex]2\pi{r}[/tex]
maka
Menghitung Luas lingkaran
Lingkaran besar
[tex] = \frac{22}{7} \times 14 \times 14 \\ = 22 \times 2 \times 14 \\ = 44 \times 14 \\ = 616 \: {cm}^{2} [/tex]
Lingkaran kecil
[tex] = \frac{22}{7} \times 7 \times 7 \\ = 22 \times 1 \times 7 \\ = 22 \times 7 \\ = 154 \: {cm}^{2} [/tex]
Total Luas
[tex] = (\frac{1}{2} \times 616 )+ 154 \\ =308 + 154 \\ = 462 \: {cm}^{2} [/tex]
Menghitung Keliling Lingkaran
Lingkaran besar
[tex] = 2 \times \frac{22}{7 } \times 14 \\ = 2 \times 22 \times 2 \\ = 4 \times 22 \\ = 88 \: cm[/tex]
Lingkaran kecil
[tex] = 2 \times \frac{22}{7} \times 7 \\ = 2 \times 22 \times 1 \\ = 2 \times 22 \\ = 44 \: cm[/tex]
Total Keliling
[tex] = ( \frac{1}{2} \times 88) + 44 \\ = 44 + 44 \\ = 88 \: cm[/tex]
maaf jika salah, semoga membantu