Please indicate how long each bar is in centimeters and millimeters.

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth's center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3