With earth radius $6440$ km, two places subtending $32''$ at the centre are approximately how far apart?

Question

Accepted Answer

$1.0$ km

Answer

$0.5$ km

Answer

$2.0$ km

Answer

$5.0$ km

With earth radius 644064406440 km, two places subtending 32′′32''32′′ at the centre are approximately how far apart?