r = 12
- Diketahui: Lj = 8.478
r = 90 cm
π = 3,14
Ditanya: α …?
Jawab: Lj = α/360 x πr²
8.478 = α/360 x 3,14 x (90)²
8.478 = α/360 x 3,14 x 8.100
α = (8.478 x 360)/(3,14 x 8.100)
α = 3.052.080/25.434
r = 12
- Diketahui: Lj = 8.478
r = 90 cm
π = 3,14
Ditanya: α …?
Jawab: Lj = α/360 x πr²
8.478 = α/360 x 3,14 x (90)²
8.478 = α/360 x 3,14 x 8.100
α = (8.478 x 360)/(3,14 x 8.100)
α = 3.052.080/25.434
Editor: Alfiansyah