物理单位换算,最后结果科学计数法800cm²= = m²15dm²= = cm²3×10的_其他解答

物理单位换算,最后结果科学计数法
800cm²= = m²
15dm²= = cm²
3×10的7次方mm²= = m²
5×10的4次方mL= = L
2.5m³= = = mL
30m/s= = km/h
0.09m/s= = cm/min

人气：422 ℃　时间：2019-12-11 03:08:16

解答

800cm²= 800*(0.01m)^2=8.00*10^-2 m²15dm²=15*(10cm)² = 1500 cm²3×10的7次方mm²= 3×10的7次方 *(0.001 m)²=30m²5×10的4次方mL=5×10的4次方*(0.001L)=50 L2.5m³...