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

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

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Example Questions

Example Question #1191 : Isee Lower Level (Grades 5 6) Mathematics Achievement

Find the area of a square that has a base of length 6 feet.

Possible Answers:

\(\displaystyle \text{There is not enough information to solve the problem.}\)

\(\displaystyle 24\text{ft}^2\)

\(\displaystyle 12\text{ft}^2\)

\(\displaystyle 18\text{ft}^2\)

\(\displaystyle 36\text{ft}^2\)

Correct answer:

\(\displaystyle 36\text{ft}^2\)

Explanation:

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

\(\displaystyle \text{area of square} = l \cdot w\)

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

 

Now, we know the square has a base of length 6 feet.  Because it is a square, we know that all sides are equal.  Therefore, all sides are 6 feet.

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

\(\displaystyle \text{area of square} = 6\text{ft} \cdot 6\text{ft}\)

\(\displaystyle \text{area of square} = 36\text{ft}^2\)

Example Question #111 : Squares

Use the following square to answer the question:

Square1

Find the area.

Possible Answers:

\(\displaystyle 5\text{cm}^2\)

\(\displaystyle \text{There is not enough information to solve the problem.}\)

\(\displaystyle 10\text{cm}^2\)

\(\displaystyle 25\text{cm}^2\)

\(\displaystyle 20\text{cm}^2\)

Correct answer:

\(\displaystyle 25\text{cm}^2\)

Explanation:

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

\(\displaystyle \text{area of square} = l \cdot w\)

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

 

Now, let's look at the square.

Square1

We can see the length is 5cm.  Because it is a square, all sides are equal.  Therefore, the width is also 5cm. 

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

\(\displaystyle \text{area of square} = 5\text{cm} \cdot 5\text{cm}\)

\(\displaystyle \text{area of square} = 25\text{cm}^2\)

Example Question #42 : How To Find The Area Of A Square

Find the area of a square with a width of 7in.

Possible Answers:

\(\displaystyle 32\text{in}^2\)

\(\displaystyle 28\text{in}^2\)

\(\displaystyle \text{There is not enough information to solve the problem.}\)

\(\displaystyle 49\text{in}^2\)

\(\displaystyle 48\text{in}^2\)

Correct answer:

\(\displaystyle 49\text{in}^2\)

Explanation:

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

\(\displaystyle \text{area of square} = l \cdot w\)

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

 

Now, we know the width of the square is 7in.  Because it is a square, we know that all sides are equal.  Therefore, the length is also 7in. 

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

\(\displaystyle \text{area of square} = 7\text{in} \cdot 7\text{in}\)

\(\displaystyle \text{area of square} = 49\text{in}^2\)

Example Question #41 : How To Find The Area Of A Square

Use the following square to answer the question:

Square4

Find the area.

Possible Answers:

\(\displaystyle 8\text{in}^2\)

\(\displaystyle 4\text{in}^2\)

\(\displaystyle \text{There is not enough information to solve the problem.}\)

\(\displaystyle 6\text{in}^2\)

\(\displaystyle 2\text{in}^2\)

Correct answer:

\(\displaystyle 4\text{in}^2\)

Explanation:

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

\(\displaystyle \text{area of square} = l \cdot w\)

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

 

Now, given the square

Square4

We can see the width is 2in.  Because it is a square, all sides are equal.  Therefore, the length is also 2in. 

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

\(\displaystyle \text{area of square} = 2\text{in} \cdot 2\text{in}\)

\(\displaystyle \text{area of square} = 4\text{in}^2\)

Example Question #44 : How To Find The Area Of A Square

 

 

Find the area of a square that has a width of 10cm.

Possible Answers:

\(\displaystyle 20\text{cm}^2\)

\(\displaystyle 100\text{cm}\)

\(\displaystyle 40\text{cm}^2\)

\(\displaystyle 40\text{cm}\)

\(\displaystyle 100\text{cm}^2\)

Correct answer:

\(\displaystyle 100\text{cm}^2\)

Explanation:

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

\(\displaystyle \text{area of square} = l \cdot w\)

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

 

Now, we know the width of the square is 10cm.  Because it is a square, we know that all sides are equal.  Therefore, the length is also 10cm.

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

\(\displaystyle \text{area of square} = 10\text{cm} \cdot 10\text{cm}\)

\(\displaystyle \text{area of square} = 100\text{cm}^2\)

Example Question #41 : How To Find The Area Of A Square

Find the area of a square with a length of 13in.

Possible Answers:

\(\displaystyle 169\text{in}^2\)

\(\displaystyle 154\text{in}^2\)

\(\displaystyle 39\text{in}^2\)

\(\displaystyle 144\text{in}^2\)

\(\displaystyle 52\text{in}^2\)

Correct answer:

\(\displaystyle 169\text{in}^2\)

Explanation:

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

\(\displaystyle \text{area of square} = l \cdot w\)

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

 

Now, we know the length of the square is 13in.  Because it is a square, all sides are equal.  Therefore, the length is also 13in.

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

\(\displaystyle \text{area of square} = 13\text{in} \cdot 13\text{in}\)

\(\displaystyle \text{area of square} = 169\text{in}^2\)

Example Question #45 : How To Find The Area Of A Square

Find the area of a square with a length of 11in.

Possible Answers:

\(\displaystyle 111\text{in}^2\)

\(\displaystyle 121\text{in}^2\)

\(\displaystyle 44\text{in}^2\)

\(\displaystyle 110\text{in}^2\)

\(\displaystyle \text{There is not enough information to solve the problem.}\)

Correct answer:

\(\displaystyle 121\text{in}^2\)

Explanation:

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

\(\displaystyle A = l \cdot w\)

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

 

Now, we know the length of the square is 11in.  Because it is a square, all sides are equal.  Therefore, the width is also 11in.

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

\(\displaystyle A = 11\text{in} \cdot 11\text{in}\)

\(\displaystyle A = 121\text{in}^2\)

Example Question #41 : How To Find The Area Of A Square

Find the length of one side of a square with an area of 64in.

Possible Answers:

\(\displaystyle 16\text{in}\)

\(\displaystyle 9\text{in}\)

\(\displaystyle 8\text{in}\)

\(\displaystyle 14\text{in}\)

\(\displaystyle 7\text{in}\)

Correct answer:

\(\displaystyle 8\text{in}\)

Explanation:

The formula to find area of a square is

\(\displaystyle A = x^2\)

where x is the length of one side of a square.  Now, to find the length of a side, we will solve for x.

 

So, we know the area of the square is 64in.  Knowing this, we can substitute into the formula.  We get

\(\displaystyle 64\text{in} = x^2\)

 

\(\displaystyle \sqrt{64\text{in}} = \sqrt{x^2}\)

 

\(\displaystyle 8\text{in} = x\)

 

\(\displaystyle x = 8\text{in}\)

 

Therefore, the length of one side of the square is 8in.

Example Question #111 : Squares

Find the area of a square with a width of 7cm.

Possible Answers:

\(\displaystyle \text{There is not enough information to solve the problem.}\)

\(\displaystyle 42\text{cm}^2\)

\(\displaystyle 28\text{cm}^2\)

\(\displaystyle 49\text{cm}^2\)

\(\displaystyle 56\text{cm}^2\)

Correct answer:

\(\displaystyle 49\text{cm}^2\)

Explanation:

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

\(\displaystyle A = l \cdot w\)

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

 

Now, we know the width of the square is 7cm.  Because it is a square, all sides are equal.  Therefore, the length is also 7cm.  So, we get

\(\displaystyle A = 7\text{cm} \cdot 7\text{cm}\)

\(\displaystyle A = 49\text{cm}^2\)

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