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Basic Geometry : Plane Geometry

Study concepts, example questions & explanations for Basic Geometry

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9 Diagnostic Tests 164 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #1 : How To Find The Area Of A Rectangle

What is the area of a rectangle that has a length of and a width of ?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

$\text{Area}=2 \times 20=40$

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Example Question #1 : How To Find The Area Of A Rectangle

What is the area of a rectangle that has a length of and a width of ?

Possible Answers:

130

120

Correct answer:

120

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

$\text{Area}=12 \times 10= 120$

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Example Question #1 : How To Find The Area Of A Rectangle

What is the area of a rectangle that has a length of and a width of ?

Possible Answers:

120

240

360

Correct answer:

240

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

$\text{Area}=8 \times 30= 240$

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Example Question #1 : How To Find The Area Of A Rectangle

What is the area of a rectangle that has a length of 100 and a width of ?

Possible Answers:

400

600

200

104

Correct answer:

400

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

$\text{Area}=100 \times 4= 400$

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Example Question #561 : Plane Geometry

What is the area of a rectangle that has a length of and a width of ?

Possible Answers:

650

2600

1300

980

Correct answer:

1300

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

$\text{Area}=65 \times 20= 1300$

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Example Question #562 : Plane Geometry

What is the area of a rectangle that has a length of and a width of ?

Possible Answers:

1800

130

5600

3600

Correct answer:

3600

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

$\text{Area}=90 \times 40= 3600$

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Example Question #563 : Plane Geometry

What is the area of a rectangle that has a length of and a width of ?

Possible Answers:

216

108

Correct answer:

108

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

$\text{Area}=18 \times 6= 108$

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Example Question #154 : Rectangles

What is the area of a rectangle that has a length of $\frac{4}{5}$ and a width of $\frac{1}{2}$ ?

Possible Answers:

$\frac{1}{5}$

$\frac{2}{5}$

$\frac{13}{10}$

$\frac{7}{5}$

Correct answer:

$\frac{2}{5}$

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

When multiplying fractions, multiply the numerators together and multiply the denominators together. After multiplication is done, find common factors in the numerator and denominator to cancel out and completely simplify the fraction.

$\\ \text{Area}=\frac{4}{5} \times \frac{1}{2}\\ \\ \text{Area}=\frac{4}{10}=\frac{2\cdot 2}{2\cdot 5}\\ \\\text{Area}= \frac{2}{5}$

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Example Question #161 : Rectangles

What is the area of a rectangle that has a length of 1.8 and a width of 2.5 ?

Possible Answers:

3.6

4.5

5.8

7.1

Correct answer:

4.5

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

When multiplying decimals together first move the decimal over so that the number is a whole integer.

$1.8\rightarrow 18, 2.5\rightarrow 25$

Now we multiple the integers together.

$1.8\cdot 2.5\rightarrow 18\cdot 25=450$

From here, we need to move the decimal place back. In this particular problem we moved the decimal over one time for each number for a total of two decimal places.

Therefore our answer becomes,

$450\rightarrow 4.50$

$\text{Area}=1.8 \times 2.5= 4.5$

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Example Question #14 : How To Find The Area Of A Rectangle

What is the area of a rectangle that has a length of 12.5 and a width of ?

Possible Answers:

95.5

125

22.5

Correct answer:

125

Explanation:

Recall how to find the area of a rectangle:

$\text{Area}=\text{length}\times\text{width}$

Now, plug in the given length and width to find the area.

When multiplying decimals together first move the decimal over so that the number is a whole integer.

$12.5\rightarrow 125$

Now we multiple the integers together.

$12.5\cdot 10\rightarrow 125\cdot 10=1250$

From here, we need to move the decimal place back. In this particular problem we moved the decimal over one place.

Therefore our answer becomes,

$1250\rightarrow 125.0$

$\text{Area}=12.5 \times 10= 125$

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All Basic Geometry Resources

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Basic Geometry : Plane Geometry

Study concepts, example questions & explanations for Basic Geometry

All Basic Geometry Resources

Example Questions

Example Question #1 : How To Find The Area Of A Rectangle

Example Question #1 : How To Find The Area Of A Rectangle

Example Question #1 : How To Find The Area Of A Rectangle

Example Question #1 : How To Find The Area Of A Rectangle

Example Question #561 : Plane Geometry

Example Question #562 : Plane Geometry

Example Question #563 : Plane Geometry

Example Question #154 : Rectangles

Example Question #161 : Rectangles

Example Question #14 : How To Find The Area Of A Rectangle

All Basic Geometry Resources

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