tolong mtk aku ribet pls.....

1. 22/7 × 14×14×20
=12.320 cm
2. 22/7 ×7×7×16
=2.464 dm
3. 22/7 ×14×14×10
=6.160 dm
4. 3,14 × 10×10×50
= 15.700 cm

maaf klo salah.....