Question

one fifth of a meter=cm​

Answer 1

1m =100cm

so,

1÷5m=100÷5cm

so,

It is 20cm

Answer 2

$1 \: m = 100 \: cm \\ \\ \frac{1}{5} \: m = \frac{100}{5} \: cm = 20 \: cm \\ \mathsf{So, \: one \: fifth \: of \:a \: meter = 20 \: cm }$