Find the volume of cube , one face of which has an area of 81ms square
V=a^3
a = side length
The square root of 81 = 9 = side length
L=W=h = sqrt 81 = 9 m.
V = L * W * h = 9 * 9 *9 = 729 m^3.
To find the volume of a cube, you need to know the length of one side of the cube.
In this case, the area of one face of the cube is given as 81 square meters. The area of a square is calculated by multiplying the length of one side by itself. So, we can find the length of one side of the square (and hence the cube) by taking the square root of the given area.
Let's calculate the length of one side:
√81 = 9
So, the length of one side of the cube is 9 meters.
To find the volume of the cube, you need to raise the length of one side to the power of 3 (since a cube has all sides of equal length):
Volume = (side length)^3
Substituting the value of the side length:
Volume = 9^3 = 729 cubic meters
Therefore, the volume of the cube is 729 cubic meters.