Water flows through a $0\mathrm{.}5$ cm diameter pipe connected to a $1$ cm diameter pipe.

Compared to the speed of the water in the $0\mathrm{.}5$ cm pipe, the speed in the $1$ cm pipe is

one$-$quarter the speed in the $0\mathrm{.}5$ cm pipe.

one$-$half the speed in the $0\mathrm{.}5$ cm pipe.

$1$he same as the speed in the $0\mathrm{.}5$ cm pipe.

double the speed in the $0\mathrm{.}5$ cm pipe.

quadruple the speed in the $0\mathrm{.}5$ cm pipe.