# Volume of Pyramids (Grades 11-12)

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## Volume of Pyramids

1.

The great pyramid of Giza has a height of 481 feet and a square base with a width of 756 feet. If it is solid inside, what volume of rock is in it?

- [math]65","333","333 \ "ft"^3[/math]
- [math]91","636","272 \ "ft"^3[/math]
- [math]19","636","272 \ "ft"^3[/math]
- [math]695","272 \ "ft"^3[/math]

2.

A pyramid has a base of 200 ft by 250 ft and a height of 87 ft. Inside the pyramid is a room in the shape a of a pyramid which measures 50 ft by 60 ft and 30 ft high. What volume of stone is used in the structure?

- [math]1","340","000 \ "ft"^3[/math]
- [math]420","000 \ "ft"^3[/math]
- [math]1","450","000 \ "ft"^3[/math]
- [math]1","420","000 \ "ft"^3[/math]

3.

A rectangular pyramid shaped roof has a volume of [math]4,000 \ "ft"^3[/math] and a width to length ratio of 3:4. If the roof height is 10 ft, what is the length?

- 40 ft
- 30 ft
- 35 ft
- 65 ft

4.

A square pyramid sculpture contains [math]50 \ ft^3[/math] of granite and is 6 feet high. What is the area of the base of the sculpture?

- [math]5 \ ft[/math]
- [math]25 \ ft[/math]
- [math]5 \ ft^2[/math]
- [math]25 \ ft^2[/math]

5.

A rectangular pyramid is 253 ft by 372 ft and 132 ft tall. What is the volume of the pyramid?

- [math]4,104,141 \ "ft"^3[/math]
- [math]3,265,124 \ "ft"^3[/math]
- [math]4,008,333 \ "ft"^3[/math]
- [math]4,141,104 \ "ft"^3[/math]

6.

A pool with a fountain is the shape of an inverted pyramid. The pool must be [math]25 \ m[/math] square and can hold [math]2,500 \ m^3[/math]. How deep must it be in the middle?

- [math]12 \ m[/math]
- [math]16 \ m[/math]
- [math]11 \ m[/math]
- [math]26 \ m[/math]

7.

Sound damping foam used in recording studios is often composed of many square pyramids aligned edge to edge. Each pyramid is 4 in X 4 in X 4 in. What volume of foam would be required to cover the walls and ceiling of a studio which is 16 ft X 12 ft X 8 ft? (The ceiling is 8 ft high.)

- [math]64 \ "ft"^3[/math]
- [math]213 \ "ft"^3[/math]
- [math]71 \ "ft"^3[/math]
- [math]17 \ "ft"^3[/math]

8.

A pyramid shaped roof covers a house which is 36 ft X 36 ft. If the attic contains [math]4320 \ "ft"^3[/math] of air, how high is the peak?

- [math]10 \ "ft"[/math]
- [math]8 \ "ft"[/math]
- [math]12 \ "ft"[/math]
- [math]11.5 \ "ft"[/math]

9.

An ancient pyramid is 232 feet long, 183 feet wide and 130 feet tall. The interior cavity is a rectangular prism 80 feet long, 60 feet wide and 20 feet high. What volume of stone is in the pyramid?

- [math]10","103","452 \ "ft"^3[/math]
- [math]10","131","452 \ "ft"^3[/math]
- [math]10","743","760 \ "ft"^3[/math]
- [math]1","743","760 \ "ft"^3[/math]

10.

A hedge is trimmed in the shape of a pyramid. The hedge is 8 feet square at the base and 6 feet high. If the shrub takes up 40% of the volume of the hedge, what volume of shrubbery is in the hedge?

- [math]59.2 \ ft^3[/math]
- [math]153.6 \ ft^3[/math]
- [math]49.8 \ ft^3[/math]
- [math]51.2 \ ft^3[/math]

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