Jawaban:
1. Diameter = 9² = 18 cm
Luas lingkaran = π × R × R = 3,14 × 9² = 254,3 cm²
2. Jari jari = 7 cm
Diameter = 7² = 14 cm
3. Jari jari = 20 : 2 = 10 cm
Luas = π × r² = 3,14 = 314/100 × 10 × 10 = 314 cm²
1.Jari - jari = 9 cm
Diameter = 18 cm ( karena hari jari sama dengan ½ dari diameter )
Luas = π × r²
= 3,14 × 9 × 9
= 28,26 × 9
= 254,34 cm²
2.Jari - jari = 7 cm
Diameter = 14 cm
=22/7 × 7 × 7
= 22 × 7
= 154 cm²
3.Jari -jari = 10 cm
Diameter = 20 cm
= 3,14 × 10 × 10
= 31,4 × 10
= 314 cm²
Maaf semaaf - maafnya jika saya salah, tetapi saya telah melakukannya sebisa mungkin
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Jawaban:
1. Diameter = 9² = 18 cm
Luas lingkaran = π × R × R = 3,14 × 9² = 254,3 cm²
2. Jari jari = 7 cm
Diameter = 7² = 14 cm
3. Jari jari = 20 : 2 = 10 cm
Luas = π × r² = 3,14 = 314/100 × 10 × 10 = 314 cm²
1.Jari - jari = 9 cm
Diameter = 18 cm ( karena hari jari sama dengan ½ dari diameter )
Luas = π × r²
= 3,14 × 9 × 9
= 28,26 × 9
= 254,34 cm²
2.Jari - jari = 7 cm
Diameter = 14 cm
Luas = π × r²
=22/7 × 7 × 7
= 22 × 7
= 154 cm²
3.Jari -jari = 10 cm
Diameter = 20 cm
Luas = π × r²
= 3,14 × 10 × 10
= 31,4 × 10
= 314 cm²
Maaf semaaf - maafnya jika saya salah, tetapi saya telah melakukannya sebisa mungkin