Question

A cube has an edge length of 21 cm. Use an exponent to express its volume.

Answer 1

96.23 to the power of 96.23

Step-by-step explanation: Well since we know that the cube has a length of 21 cm, then we can refer that the rest of the sides are also 21 cm. Volume is length times width times height. So we multiply 21*21*21=9261. And we are using an exponent so we find the square root of 9261 which is 96.23. So I think the exponent is 96.23 to the power of 96.23. I am not sure!

Answer 2

The Volume of the cube is given by

Volume= length × breadth × height

Volume = 7³ × 3³ cm³

But the cube has all sides equal. If the length of one side of the cube is known then the volume can be easily found by taking the cube of the length given.

Volume = length³

Volume = 21³cm³

V= (7×3)³cm³

Using the law of exponents

or

V= 7³ × 3³cm³