ISEE Upper Level Math : How to find the area of a square

Study concepts, example questions & explanations for ISEE Upper Level Math

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Example Question #251 : Isee Upper Level (Grades 9 12) Mathematics Achievement

One of your holiday gifts is wrapped in a cube-shaped box. 

If one of the edges has a length of 6 inches, what is the area of one side of the box?

Possible Answers:

Correct answer:

Explanation:

One of your holiday gifts is wrapped in a cube-shaped box. 

If one of the edges has a length of 6 inches, what is the area of one side of the box?

We are asked to find the area of one side of a cube, in other words, the area of a square.

We can find the area of a square by squaring the length of the side.

Example Question #21 : Squares

Inscribed circle

In the above diagram, the circle is inscribed inside the square. The circle has area 30. What is the area of the square?

Possible Answers:

Correct answer:

Explanation:

Inscribed circle

In terms of , the area of the circle is equal to

Each side of the square has length equal to the diameter, , so its area is the square of this, or

Therefore, the ratio of the area of the square to that of the circle is

Therefore, the area of the circle is multiplied by this ratio to get the area of the square:

Substituting:

Example Question #22 : Squares

Find the area of a square with a base of 9cm.

Possible Answers:

Correct answer:

Explanation:

To find the area of a square, we will use the following formula:

where l is the length and w is the width of the square.

 

Now, we know the base (or length) of the square is 9cm.  Because it is a square, all sides are equal.  Therefore, the width is also 9cm.  

Knowing this, we can substitute into the formula.  We get

Example Question #252 : Geometry

While out walking, you find a strange, square-shaped piece of metal. If the side length of the piece is 26 inches, what is the area of the square?

Possible Answers:

Correct answer:

Explanation:

While out walking, you find a strange, square-shaped piece of metal. If the side length of the piece is 26 inches, what is the area of the square?

To find the area of a square, simply square the side length:

So, our answer is:

Example Question #24 : Squares

What is the area of the square with a side length of ?

Possible Answers:

Correct answer:

Explanation:

Write the formula for the area of a square.

Substitute the side into the formula.

The answer is:  

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