nomor 6 berapa hasil nya

Luas = πr²
r1 = 12 cm & r2 = 24 cm
Luas 1 = πr² = 22/7 (12²) = 452,57 cm²
Luas 2 = πr² = 22/7 (24²) = 1.810,23 cm²

Selisih luas = 1.810,23 - 452,57 = 1.357,72 cm²
Perbandingan luas = 1.810,23 : 452,57