Jawabanmu

2014-01-28T08:50:13+07:00
Luas lingkaran = π × r² = 3,14 × 0,2 × 0,2 = 0,1256 m²
2014-01-28T10:14:38+07:00
L = pi r^2
L = 3,14 * 400
L = 1256 cm^2