Question

What is the length of the edge of the cube who's volume is 729cmcube

Answer 1

We know that volume of a cube is the cube of the measure of an edge
Thus, the measure of an edge is the cube root of the volume of a cube
The cube root of 729 is 9
Thus, the length of an edge is 9 cm

Answer 2

Well ....
Given.
Volume of cube =729cm³

So the length of the Edge of the cube is ...cube root of 729.
as Vol. of cube = a³=729cm³(given.)

So length of the Edge of given cube =9cm.

checking=>9×9×9=81×9=729cm³


So 9cm is your Answer.

Hope it Helps...
Regards,
Leukonov.