SSAT Middle Level Math : How to find the area of a parallelogram

Study concepts, example questions & explanations for SSAT Middle Level Math

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Example Questions

Example Question #1 : Parallelograms

Parallelogram

Note: Figure NOT drawn to scale

In the above diagram, \(\displaystyle a = 14\; \textrm{in} ,b=16\; \textrm{in},h=10\; \textrm{in}\)

Give the area of the parallelogram.

Possible Answers:

\(\displaystyle 160\; \textrm{in}^{2}\)

\(\displaystyle 224\; \textrm{in}^{2}\)

\(\displaystyle 120\; \textrm{in}^{2}\)

\(\displaystyle 140\; \textrm{in}^{2}\)

\(\displaystyle 80\; \textrm{in}^{2}\)

Correct answer:

\(\displaystyle 160\; \textrm{in}^{2}\)

Explanation:

The area of a parallelogram is its base multiplied by its height - represented by \(\displaystyle b\) and \(\displaystyle h\) here:

\(\displaystyle A = bh = 16 \cdot 10 = 160\)

Note that the value of \(\displaystyle a\) is irrelevant.

Example Question #2 : How To Find The Area Of A Parallelogram

A given parallelogram has a base \(\displaystyle 20\:cm\) in length, a height \(\displaystyle 16\:cm\) in length, and a side of length \(\displaystyle 18\:cm\) opposite the height. What is the area of the parallelogram?

Possible Answers:

\(\displaystyle 360\:cm^{2}\)

\(\displaystyle 36\:cm^{2}\)

\(\displaystyle 288\:cm^{2}\)

\(\displaystyle 320\:cm^{2}\)

\(\displaystyle 38\:cm^{2}\)

Correct answer:

\(\displaystyle 320\:cm^{2}\)

Explanation:

The formula for the area of a parallelogram is \(\displaystyle A=b\times h\), with base and height represented by \(\displaystyle b\) and \(\displaystyle h\), respectively. Substituting values from the question:

\(\displaystyle A=20\:cm\times 16\:cm\)

\(\displaystyle A=320\:cm^{2}\)

Example Question #1 : Parallelograms

A parallelogram has a height of \(\displaystyle 10\:cm\) in length, a side of length \(\displaystyle 12\:cm\) opposite the height, and a base of \(\displaystyle 24\:cm\). What is the area of the parallelogram?

Possible Answers:

\(\displaystyle 260\:cm^{2}\)

\(\displaystyle 140\:cm^{2}\)

\(\displaystyle 120\:cm^{2}\)

\(\displaystyle 240\:cm^{2}\)

\(\displaystyle 288\:cm^{2}\)

Correct answer:

\(\displaystyle 240\:cm^{2}\)

Explanation:

Given base \(\displaystyle (b)\) and height \(\displaystyle (h)\)\(\displaystyle A=b\times h\).

Substituting the values from our question:

\(\displaystyle A=24\:cm\times 10\:cm\)

\(\displaystyle A=240\:cm^{2}\)

Example Question #171 : Geometry

A parallelogram has a base of length \(\displaystyle 30\:cm\), a height of length \(\displaystyle 15\:cm\), and a side of length \(\displaystyle 13\:cm\). What is the area of the parallelogram?

Possible Answers:

\(\displaystyle 450\:cm^{2}\)

\(\displaystyle 300\:cm^{2}\)

\(\displaystyle 45\:cm^{2}\)

\(\displaystyle 390\:cm^{2}\)

\(\displaystyle 195\:cm^{2}\)

Correct answer:

\(\displaystyle 450\:cm^{2}\)

Explanation:

Given base \(\displaystyle (b)\) and height \(\displaystyle (h)\)\(\displaystyle A=b\times h\).

Substituting the values from our question:

\(\displaystyle A= 30\:cm\times15\:cm\)

\(\displaystyle A=450\:cm^{2}\)

Example Question #131 : Plane Geometry

Find the area of a parallelogram with a height of \(\displaystyle 9\:cm\), a base of \(\displaystyle 8\:cm\), and a side length of \(\displaystyle 7\:cm\).

Possible Answers:

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

\(\displaystyle 63\:cm^{2}\)

\(\displaystyle 72\:cm^{2}\)

\(\displaystyle 72\:cm\)

\(\displaystyle 63\:cm\)

Correct answer:

\(\displaystyle 72\:cm^{2}\)

Explanation:

The area \(\displaystyle A\) of a parallelogram with height \(\displaystyle h\) and base \(\displaystyle b\) can be found with the equation \(\displaystyle A=bh\). Consequently:

\(\displaystyle A=bh\)

\(\displaystyle A=(9\:cm)(8\:cm)\)

\(\displaystyle A=72\:cm^{2}\)

Example Question #6 : Parallelograms

Find the area of a parallelogram with a height of \(\displaystyle 12\:cm\), base of \(\displaystyle 11\:cm\), and a side length of \(\displaystyle 7\:cm\).

Possible Answers:

\(\displaystyle 132\:cm\)

\(\displaystyle 77\:cm\)

\(\displaystyle 77\:cm^{2}\)

\(\displaystyle 132\:cm^{2}\)

\(\displaystyle 84\:cm^{2}\)

Correct answer:

\(\displaystyle 132\:cm^{2}\)

Explanation:

The area \(\displaystyle A\) of a parallelogram with height \(\displaystyle h\) and base \(\displaystyle b\) can be found with the equation \(\displaystyle A=bh\). Consequently:

\(\displaystyle A=bh\)

\(\displaystyle A=(12\:cm)(11\:cm)\)

\(\displaystyle A=132\:cm^{2}\)

Example Question #92 : Quadrilaterals

Find the area of the following parallelogram:

Isee_mid_question_42

Note: The formula for the area of a parallelogram is \(\displaystyle A=b\times h\).

Possible Answers:

\(\displaystyle 50\: in^2\)

\(\displaystyle 30\: in^2\)

\(\displaystyle 32\: in^2\)

\(\displaystyle 60\: in^2\)

Correct answer:

\(\displaystyle 50\: in^2\)

Explanation:

The base of the parallelogram is 10, while the height is 5.

\(\displaystyle A=b\times h\)

\(\displaystyle A=10\times5=50\: in^2\)

Example Question #1 : Area Of A Parallelogram

Find the area:

Question_5

 

Possible Answers:

\(\displaystyle \small 24\)

\(\displaystyle \small 32\)

\(\displaystyle \small 12\)

\(\displaystyle 15\)

\(\displaystyle \small 16\)

Correct answer:

\(\displaystyle \small 24\)

Explanation:

The area of a parallelogram can be determined using the following equation:

\(\displaystyle \small A=bh\)

Therefore,

\(\displaystyle \small A=8\times3=24\)

 

Example Question #3 : How To Find The Area Of A Parallelogram

Parallelogram

Find the area of the given parallelogram if  \(\displaystyle h=5, b=8, c=6\) .

Possible Answers:

\(\displaystyle 38\)

\(\displaystyle 30\)

\(\displaystyle 28\)

\(\displaystyle 48\)

\(\displaystyle 40\)

Correct answer:

\(\displaystyle 40\)

Explanation:

In order to find the area of a parallelogram, we need to find the product of the base length and height. 

\(\displaystyle A=(b)(h)=(8)(5)=40\)

Notice that only two of the given values were needed to slove this problem.

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