Keliling = 2πr
18,84 = 2 x 3,14 x r
2r = 6
r = 6/2 = 3 m
luas, maka
luas = πr²
luas = 3,14 x 3²
luas = 3,14 x 9
luas = 28, 26 m²
Keliling = 2πr
18,84 = 2 x 3,14 x r
2r = 6
r = 6/2 = 3 m
luas, maka
luas = πr²
luas = 3,14 x 3²
luas = 3,14 x 9
luas = 28, 26 m²