Question

EXERCISE 19B
le perimeter of one face of a cube is 20 cm. Find the volume of the cube.
answer this question ​

Answer 1

Let a be the edge of cube.

Given,

Perimeter of one face of cube = 20

⇒ 4a = 20

⇒ a = 5 cm

Now,

Volume of cube = a³

                           = 125 cm³

∴  Volume of cube is 125 cm³

Hope this helps!

Answer 2

SOLUTION:-

Given:

Perimeter of one face of a cube is 20cm.

So,

Let a be the edge of cube.

Therefore,

=) 4a= 20

=) a= 20/4

=) a= 5cm

Now,

We know that, volume of cube = a³.

=) (5)³

=) 5cm× 5cm ×5cm

=) 125cm³

Hope it helps ☺️