AnswersPA-Geometry B-CRThree-Dimensional Figures and Cross Sections

Volume of Pyramids Answers

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Six identical square pyramids can fill the same volume as a cube with the same base. If the height of the cube is h units, what is true about the height of each pyramid?

A
The height of each pyramid is h units.
Option A
B
The height of each pyramid is h units.
Option B
C
The height of each pyramid is h units.
Option C
D
The height of each pyramid is h units.
Option D
3

24✔ 6

A
2
B
4
C
6
4

(1/6)(b)(b)(h)✔ (1/6)(b)(b)(2h)(1/6)(2b)(h)

A
(1/6)(b)(b)(h)
B
(1/6)(b)(b)(2h)
C
(1/6)(2b)(h)
118949

The length of the base edge of a pyramid with a regular hexagon base is represented as x. The height of the pyramid is 3 times longer than the base edge.

Answers:
The volume of the cube is cubic units.:(b)(b)(b)
The height of each pyramid, h, is . Therefore,:b/2
There are square pyramids with the same base and height that exactly fill the given cube.:6
Therefore, the volume of one pyramid is or Bh.:(1/6)(b)(b)(2h)
118950

✔ (b)(b)(b)(b)(b)(b/2)(b)(b)(b/6)

A
✔ (b)(b)(b)
B
(b)(b)(b/2)
C
(b)(b)(b/6)
118952

24✔ 6

A
2
B
4
C
✔ 6
118953

Therefore, the volume of one pyramid is [___] or Bh.

A
(1/6)(b)(b)(h)
B
(1/6)(b)(b)(2h)
C
(1/6)(2b)(h)
118964

7,93552,900✔ 2,645,0007,935,000

A
7,935
B
52,900
C
✔ 2,645,000
D
7,935,000
118975

Kabir wants to know the volume of a solid right pyramid with a square base. He uses a ruler to measure the length of the base as 8 inches. He then measures the slant height to be 5 inches.

Answers:
The hypotenuse of the right triangle used to determine the height is inches.:5
The leg of the right triangle that lies on the same plane as the base is inches.:4
The height of the pyramid is inches.:3
The volume of the solid pyramid is cubic inches.:64
118995

The length of the base edge of a pyramid with a regular hexagon base is represented as x. The height of the pyramid is 3 times longer than the base edge.

Answers:
The height of the pyramid can be represented as .:3x
The of an equilateral triangle with length x is units2.:area
The area of the hexagon base is times the area of the equilateral triangle.:six
The volume of the pyramid is x3 units3.:3/2
118996

altitudeapothem✔ areavolume

A
altitude
B
apothem
C
✔ area
D
volume

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