Q&A for How to Calculate the Area of a Parallelogram

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How do I know if the two lines are parallel?

Taylor Klein
Advanced Math Teacher
Taylor Klein is an Advanced Math Teacher based in Philadelphia, Pennsylvania. She has worked in the education field for over 10 years, including eight years as a middle school Advanced Math Teacher. She has a master’s degree in Instructional Technology and Design and a master’s degree in Educational Leadership and Administration.

Taylor Klein

Advanced Math Teacher

Expert Answer

To determine the parallelism of two lines, it is necessary to calculate the slope of each line, which is defined as the ratio of the vertical change (rise) to the horizontal change (run). If the slopes of two lines are identical, then the lines are parallel.

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Question

How do I find base in a parallelogram?

Donagan

Top Answerer

Divide the area by the height.

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Question

How do I find base?

Donagan

Top Answerer

Divide the area by the height.

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Question

On the parallelogram with 10cm base and 5cm height, is the area 50 sq. cm?

Donagan

Top Answerer

Yes.

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Question

How do I calculate the area of a parallelogram with only the height given?

Donagan

Top Answerer

If all you know is the height, you can't calculate the area.

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How do I find the height?

Donagan

Top Answerer

Divide the area by the base.

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Question

What is the area of a parallelogram that has a height of 9 and a base of 11 and has a cut of a triangle in side it and is height of 8?

Charlotte Cecillia Chang

Community Answer

Calculate the area of the parallelogram first, then calculate the area of the triangle. Last, you minus the area of the triangle from the area of the parallelogram.

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How to find height if you don't know the area?

Charlotte Cecillia Chang

Community Answer

If the picture is accurate, you can measure the parallelogram‘s height from the base you chose to the highest point of the parallelogram.

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Question

How do I find the area?

Charlotte Cecillia Chang

Community Answer

Use the formula: Base x Height and you will find the area of the parallelogram.

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Question

What is the answer to this question: The base is 16 cm x height 12.5?

Charlotte Cecillia Chang

Community Answer

You can add a decimal place to 16 like this: 16.0 Then, multiply the two numbers like any other multiplication problem. Once you found the answer, remember to put the decimal point in the accurate place where two decimal places are found.

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