All GED Math Resources
Example Questions
Example Question #132 : 3 Dimensional Geometry
A sphere has a radius of 5in. Find the surface area.
To find the surface area of a sphere, we will use the following formula:
where r is the radius of the sphere.
Now, we know the radius of the sphere is 5in.
So, we can substitute into the formula. We get
Example Question #1654 : Ged Math
Find the surface area of a cube with a height of 13in.
To find the surface area of a cube, we will use the following formula:
where l is the length, and w is the width of the cube.
Now, we know the length of the cube is 13in. Because it is a cube, all sides are equal. Therefore, the width is also 13in. So, we can substitute. We get
Example Question #141 : 3 Dimensional Geometry
Find the surface area of a sphere with a radius of 8in.
To find the surface area of a sphere, we will use the following formula:
where r is the radius of the sphere.
Now, we know the radius of the sphere is 8in.
Knowing this, we can substitute into the formula. We get
Example Question #142 : 3 Dimensional Geometry
Give the surface area of the above sphere.
Given the radius of a sphere, the surface area can be calculated using the formula
.
Set in the formula and evaluate:
Example Question #692 : Geometry And Graphs
A cube has a width of 8in. Find the surface area.
To find the surface area of a cube, we will use the following formula:
where l is the length, and w is the width of the cube.
Now, we know the width of the cube is 8in. Because it is a cube, all sides/lengths are equal. Therefore, the length is also 8in. So, we can substitute. We get
Example Question #693 : Geometry And Graphs
Let
Find the surface area of a sphere with a radius of 5in.
To find the surface area of a sphere, we will use the following formula:
where r is the radius of the sphere.
Now, we know . We know the radius of the sphere is 5in. So, we can substitute. We get
Example Question #1661 : Ged Math
Let
If a sphere has a radius of 3cm, find the surface area.
To find the surface area of a sphere, we will use the following formula:
where r is the radius of the sphere.
Now, we know . We know the radius of the sphere is 3cm. So, we substitute. We get
Example Question #142 : 3 Dimensional Geometry
Find the surface area of a cube with a length of 9in.
To find the surface area of a cube, we will use the following formula.
where a is the length of any side of the cube.
Now, we know the length of the cube is 9in. Because it is a cube, all sides/lengths are equal. Therefore, we can use any side of the cube in the formula. So, we get
Example Question #691 : Geometry And Graphs
Find the surface area of a cube with a side length of .
Write the formula for the surface area of a cube.
Substitute the side length into the formula.
The answer is:
Example Question #697 : Geometry And Graphs
Find the surface area of a cube with a side length of .
Write the formula for the surface area of a cube.
Substitute the side.
The answer is:
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