Question

the surface area and volume of a cube is numerically equal then find the edge of a cube

Answer 1

Hey!

Given,
T.SA = Volume
6a² = a³ 
a³-6a² = 0
a(a²-6a)=0
a(a)(a-6)= 0
a =  6

hence, Edge of cube = 6 cm

Answer 2

Volume of cube = Total surface area of the cube
l^3 = 6l^2
cancelling l^2 on both sides
I = 6 units.