Answer:
8
Step-by-step explanation:
volume of cube=l×w×h
in a cube all this are equal so volume=l³
512=l³
cube root on both sides leaves
∛512=l
l=8
145 + 19t
circumference =2×pi×r
18/2=9(r)
so...2×pi×9
=54..5
I don't think they are equivalent. try it yourself