Respuesta :

Answer:

TSA of cube = 6l²= 54

6l²= 54

l²= 9

l=3= height of cube

Step-by-step explanation:

kafleshristi2005

Answer:

The height of cube is 3cm.

Step-by-step explanation:

let length be l.

In cube,

length = height = breadth

Total Surface Area(T.S.A) = 54cm^2

We know that,

T.S.A of cube = 6l^2

or, 54cm^2 = 6l^2

or, (54cm^2)/6 = l^2

or, 9cm^2 = l^2

or, (3cm)^2 = l^2

or, l = 3cm