All SAT Math Resources
Example Questions
Example Question #735 : Geometry
The volumes of six cubes form an arithmetic sequence. The two smallest cubes have sidelengths 10 and 12, respectively. Give the volume of the largest cube.
The volume of a cube is equal to the length of a side raised to the third power. The two smallest cubes will have volumes:
and
,
respectively.
The volumes form an arithmetic sequence with these two volumes as the first two terms, so their common difference is
.
The volume of the largest, or sixth-smallest, cube, is
Example Question #733 : Sat Mathematics
Find the volume of a cube with side length 4.
To solve, simply use the formula for the volume of a cube.
Substitute in the side length of four into the following equation.
Thus,
Example Question #736 : Sat Mathematics
Find the volume of a cube given side length is 1.
To solve, simply use the formula for the volume of a cube. Thus,
Example Question #17 : How To Find The Volume Of A Cube
A cube has a surface area of . What is its volume?
Remember that a cube's surface area, because it's comprised of six identical squares, can be stated as . With that in mind,
The last step is easy:
Example Question #16 : How To Find The Volume Of A Cube
What is the volume of a cube with a side length of 7.5 cm?
(Round two the nearest two places)
The formula for volume of a cube is,
where
.
The side length of the cube is given as 7.5cm.
Substituting this into the formula for a cube's volume is as follows.
Example Question #11 : How To Find The Volume Of A Cube
Find the volume of a cube whose side length is 7cm.
The volume of a cube is length*width*height. In a cube all the side lengths are equal. Volume=7cm*7cm*7cm=343cm^3
Example Question #741 : Geometry
One side of a cube is units long. What is the volume of the cube if it is cut in half?
The volume of a cube is given by multiplying its length, width, and height, which are all equal. Therefore we can say:
Substitute in our given measurement:
We want to know the volume of the cube if it is cut in half, so let's divide this answer in two:
Example Question #41 : Solid Geometry
At your university there is a metal cube-shaped sculpture near the math building. If the cube has a side length of 4 meters, what is the cube's volume?
At your university there is a metal cube-shaped sculpture near the math building. If the cube has a side length of 4 meters, what is the cube's volume?
Begin with the formula for volume of a cube, then just simplify:
Example Question #1 : Pyramids
If the height of a pyramid was increased by 20% and a side of the square base was decreased 30%, what would happen to the volume of the pyramid?
There is a 59% increase in volume
It would have the same volume
59% decrease in volume
There is a 41% decrease in volume
There is no way to know if it would increase or decrease in volume
There is a 41% decrease in volume
First, you will want to create a pyramid with measurements that are easy to calculate. So, let's say that we have pyramid with a base edge of 10 inches and a height of 10 inches.
So the volume of the original pyramid would be equal to
The volume of the altered pyramid would be equal to:
To find the relationship between the volume of the altered pyramid relative to the volume of the original pyramid, divide the altered volume by the original volume.
The new volume is 59% of the original volume, which means there was a 41% decrease in volume.
Example Question #1 : Pyramids
The Pyramid of Giza has a height of 480 feet. If the length of each side of the base is approximately 756 feet, what is its total surface area? Round to the nearest tenth.
If the length of one side is 756 ft, then multiply to find the area of the base.
Once you've found the area of the base, use the height of the pyramid and half of the side length of the base to determine the length of the side from the apex to the ground using the Pythagorean Theorem.
Using the side length of the base and the height of each of the triangles that form the pyramid, calculate the area of each triangle, then multiply by 4.
Add the surface area of the base to the surface area of the four triangles.