Calculating the Volume of a Pyramid with Variables

1. The length of the base edge of a pyramid with a regular hexagon base is represented as [tex]x[/tex]. The height of the pyramid is 3 times the length of the base edge.
2. The height of the pyramid can be represented as [tex]3x[/tex].
3. The area of an equilateral triangle with side length [tex]x[/tex] is [tex]\frac{x^2 \sqrt{3}}{4}[/tex] square units.
4. The area of the hexagon base is [tex]6[/tex] times the area of the equilateral triangle.
5. The volume of the pyramid is [tex]\frac{1}{3} \times \text{(area of base)} \times \text{(height)}[/tex].

Fill in the blanks:
- The height of the pyramid can be represented as [tex]\square[/tex].
- The area of an equilateral triangle with side length [tex]x[/tex] is [tex]\square[/tex] square units.
- The area of the hexagon base is [tex]\square[/tex] times the area of the equilateral triangle.
- The volume of the pyramid is [tex]\square x^3 \sqrt{3}[/tex] cubic units.



Answer :

Given the information, let's fill in the blanks step-by-step:

1. Height of the Pyramid:
The height of the pyramid is 3 times the length of the base edge. Given the base edge length is [tex]\( x \)[/tex], the height of the pyramid can be represented as [tex]\( 3x \)[/tex].

2. Area of an Equilateral Triangle:
The area of an equilateral triangle with edge length [tex]\( x \)[/tex] is given by:
[tex]\[ \text{Area} = \frac{x^2 \sqrt{3}}{4} \text{ units}^2. \][/tex]

3. Area of the Hexagon Base:
A regular hexagon can be divided into 6 equilateral triangles. Thus, the area of the hexagon base is 6 times the area of the equilateral triangle. Therefore:
[tex]\[ \text{Area of Hexagon} = 6 \times \frac{x^2 \sqrt{3}}{4} = \frac{3 x^2 \sqrt{3}}{2}. \][/tex]

4. Volume of the Pyramid:
The volume [tex]\( V \)[/tex] of a pyramid is given by:
[tex]\[ V = \frac{1}{3} \times \text{Base Area} \times \text{Height}. \][/tex]
Substituting the base area and the height, we get:
[tex]\[ \text{Volume} = \frac{1}{3} \times \frac{3 x^2 \sqrt{3}}{2} \times 3x = \frac{9 x^3 \sqrt{3}}{6} = 1.5 \sqrt{3} x^3 \text{ units}^3. \][/tex]

Now, we can fill in the blanks with the derived values:

- The height of the pyramid can be represented as [tex]\( 3x \)[/tex].
- The area of an equilateral triangle with length [tex]\( x \)[/tex] is [tex]\( \frac{x^2 \sqrt{3}}{4} \)[/tex] units[tex]\(^2\)[/tex].
- The area of the hexagon base is 6 times the area of the equilateral triangle.
- The volume of the pyramid is [tex]\( 1.5 \sqrt{3} x^3 \)[/tex] units[tex]\(^3\)[/tex].

So the final filled statements would be:

1. The height of the pyramid can be represented as [tex]\( 3x \)[/tex].
2. The area of an equilateral triangle with length [tex]\( x \)[/tex] is [tex]\( \frac{x^2 \sqrt{3}}{4} \)[/tex] units[tex]\(^2\)[/tex].
3. The area of the hexagon base is 6 times the area of the equilateral triangle.
4. The volume of the pyramid is [tex]\( 1.5 \sqrt{3} x^3 \)[/tex] units[tex]\(^3\)[/tex].