Question

2. The volume of a cube is 729 cm'. Find its total surface area.
Solution and determine its breadth​

Answer 1

Answer:

if x is the side of a cube then it's volume is x^3

here x^3=729=9^3

x=9

so side of the cube is 9 cm

total surface area of a cube is 6 side^2

here total surface area is 6.9^2 sqcm

=6.81sqcm=486 sqcm

Answer 2

Answer:

4374cm²

Step-by-step explanation:

volume of cube= 729cm³

a³=729cm³

a= √729cm³

a=27cm

total surface area=6a²

=6x 27x27

=4374cm²