Question

Total surface area of cube is 486 find lenghth of its edges

Answer 1

6a^2=486

a^2=486÷6=81

a^2=81

a=+9

Answer 2

surface area of cube = 486

formula of surface area of cube = 6×(SIDE)^2

Then, 6×(side)^2=486

= (side)^2=486/6

= (side)^2=81

= side=√81

= side=9

so , edges are of 9_