Question

the surface area of a cube is 486 square metre find its edge and volume​

Answer 1

Answer:

=>The edge of cube is 9 cm.

=>So volume of cube = 729³

Step-by-step explanation:

Total Surface area of cube = 6a²

=> 486 cm = 6a²

=> 486/6 = a²

=> a² = 81

=> a = 9

The edge of cube is 9 cm

Volume of cube = a³

=> 9³

=> 729 cm³

So volume of cube = 729 cm³

Answer 2

Answer:

Surface area of a cube= 6 (side)²

⇒6 × s²=486 cm²

⇒s²=81 cm²

⇒s= 9 cm

Volume of a cube= (side)³

= (9 cm)³

=729 cm³