tolong bantu saya!!! yang pintar matematika

1) panjang busur = 105°/360° × 2 × 22/7 × 12
= 17/2 × 44/7
= 374/7

3) ³√64 = 4

4) 96/12 = 8cm
Lp= 6 × sisi²
= 6 × 8²
= 6 × 64
= 384

5)