cm2 から km2 変換ツール - 平方センチメートル から 平方キロメートル

Conversion derivation

Express both cm2 and km2 in the same base unit m2 (square meter), then cancel the shared base unit.

1. 1

   Rewrite cm2 in the base unit

   $$1cm2=0.0001m2$$
2. 2

   Rewrite km2 in the base unit

   $$1km2=1,000,000m2$$
3. 3

   Forward conversion

   $$\begin{array}{rl}1cm2& =\frac{0.0001\cancel{m2}}{1,000,000\cancel{m2}}\times 1km2\\ & =\frac{0.0001}{1,000,000}km2\\ & =1\times 10^{-10}km2\end{array}$$
4. 4

   Reverse conversion

   $$\begin{array}{rl}1km2& =\frac{1,000,000\cancel{m2}}{0.0001\cancel{m2}}\times 1cm2\\ & =\frac{1,000,000}{0.0001}cm2\\ & =1\times 10^{10}cm2\end{array}$$