tolong jawab nomor 1-5 please pakai cara besok mua di kumpul

No. 1
V=22/7×21×21×10=13860m3

No. 2
V=Luas alas × Tinggi prisma = (1/2×8×6) × 12
=24×12=288m3

No. 3
V = 1/3 × 36 × 7 = 84m3

No. 4
V = 22/7×7×7×15 = 2310m3

No. 5
V = r^3 = 40^3 = 40×40×40 = 64000m3