Penjelasan dengan langkah-langkah:
A = πr²
A = 3,14 . 100
A = 314 cm² (✓)
B = πr²
B = 3,14 . 225
B = 706,5 cm² (X)
C = B - A
C = 706,5 - 314
C = 392,5 cm² (✓)
Mapel : Matematika
Kelas : 8
Materi : Lingkaran
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Penjelasan dengan langkah-langkah:
A = πr²
A = 3,14 . 100
A = 314 cm² (✓)
B = πr²
B = 3,14 . 225
B = 706,5 cm² (X)
C = B - A
C = 706,5 - 314
C = 392,5 cm² (✓)
Mapel : Matematika
Kelas : 8
Materi : Lingkaran