Question

convert the ratio of 20 cm to 20 m​

Answer 1

$\textsf\red{We \: know \: that \: 1m \: = \: 100cm}$

$\texttt{so 20m = 20×100 = 2000m}$

$\texttt{Ratio of 20 cm and 2000cm =}$

$\texttt{1 : 100}$

Answer 2

$\: \: \boxed{\boxed{\sf{\mapsto \: Firstly \: let \: us \: Understand}}}$

$\bf{1 \: m \: = \: 100 \: cm} \\ \\ \mathsf \red{Question : \: } \mathsf{ratio \: of \: 20 \: cm \: to \: 20 \: m } \\ \\ \mathsf \pink{20 \: m = 20 \times 10 0 = 2000 \: cm} \\ \\ \mathsf{ = 20 \: cm \: : \: 20 \: m \: \: \: \: \: \: } \\ \\ \mathsf{ = 20 \: cm \: : \: 2000 \: cm} \\ \\ \mathsf{ = 1 \: cm \: : \: 100 \: cm } \\ \\ \mathsf{ = 1 \: cm \: : \: 1 \: m}$

$\boxed{ \mathsf \red{20 \: cm \: : 20 \: m = 1 \: cm \: : \: 1 \: m}}$