A cube has an edge length of 21 cm. Use an exponent to represent its volume.
To calculate the volume of a cube, you need to raise the length of one of its edges to the power of 3. In this case, the edge length of the cube is 21 cm.
To represent the cube's volume using an exponent, you can use the formula V = a^3, where V is the volume and a is the length of one edge. In this case, a is 21 cm.
Therefore, the volume of the cube can be represented as:
V = 21^3
To calculate this, you need to raise 21 to the power of 3. The exponent represents the number of times 21 is multiplied by itself:
V = 21 * 21 * 21
Calculating this multiplication, we get:
V = 9261
So, the volume of the cube is 9261 cubic centimeters (cm^3).
21^3, of course.
That's why
x^2 is called x-squared
x^3 is called x-cubed