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

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How did you get the formula?

Donagan

Top Answerer

In terms of calculating area, a parallelogram is exactly like a rectangle of the same base and height, so the area formula is the same for both figures.

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Question

What is the difference between area and perimeter?

Community Answer

Perimeter is the full length of the outline of a shape. It's the sum of the lengths of all the sides. Area is the amount of space contained within the perimeter.

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How do I find the area of quadrilaterals?

Donagan

Top Answerer

There are formulas for the area of specific quadrilaterals but none for "quadrilaterals" in general.

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Question

How do I find missing dimensions of the parallelogram?

Donagan

Top Answerer

Use the area formula to solve for the base (the "length") and for the height, then use either of those formulas to find the missing dimension.

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Question

How do I find the base of a parallelogram if given the area and height?

Donagan

Top Answerer

Divide the area by the height.

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Question

What is the area of a parallelogram that base is 1/2 cm and height is 3/10 cm?

Donagan

Top Answerer

The area is equal to the base multiplied by the height.

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Question

How do I find that area of 6x3?

Community Answer

Multiply the base and the height. 6 times 3 is 18, so your area is 18 units squared.

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How do I find the perimeter of a square?

Donagan

Top Answerer

Multiply the length of one side by four. Or find the square root of the area and multiply by four.

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Question

How do I find the area of parallelograms with side lengths as fractions?

Donagan

Top Answerer

Do it the same way you do it with side lengths that are whole numbers.

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Question

How do I find the area of a parallelogram with sides that are not the same?

Donagan

Top Answerer

All parallelograms have opposite sides that are the same, but most have adjacent sides that are not the same. In any case, use the area formula given above.

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Question

Area = 27, base = 9, what is the height?

Donagan

Top Answerer

Divide the area by the base.

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Question

How can the area of a parallelogram be found, if the side and the perpendicular distance from the opposite side is given?

Donagan

Top Answerer

Any side of a parallelogram can be considered the base, and the perpendicular distance from that base to the opposite side can be considered the height. So multiply the base by the height.

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Question

How do I find the area of a parallelogram with a given perimeter?

Donagan

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If all you know is the perimeter, you don't have enough information with which to find the area.

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Question

Don't I need to divide my answer by two?

Donagan

Top Answerer

No. You're thinking of a triangle. The area of both a rectangle and a parallelogram is found by multiplying the base by the height (length by width).

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Question

How would I find the area of a parallelogram if I only know the height?

Donagan

Top Answerer

It can't be done. You have to know the length of the base.

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Question

How do I find the area of a parallelogram with two bases and one height?

Donagan

Top Answerer

Every parallelogram is defined as having two bases and one height. To find the area, multiply the length of either base by the height. (Understand that either pair of sides of a parallelogram can be defined as the "bases" and the other pair as the "sides.")

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Question

How do I find the perimeter of a parallelogram?

Donagan

Top Answerer

Add the four sides together.

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What if you don't know the height?

Donagan

Top Answerer

Then you would have to know the lengths of the other sides and the sizes of the interior angles in order to use trigonometry to find the height.

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Question

If the area is 64² and b=2h how do you find values of b and h?

Donagan

Top Answerer

Area = 64² = 4096 = (base)(height) = (2h)(h) = 2h². So h² = 2048, h = 45.255 and b = 2h = 90.51. To check: area = bh = (90.51)(45.255) = 4096.03.

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Question

Can I use length times width with area of a parallelograms

Charlotte Cecillia Chang

Community Answer

No. You can only use Base x Width to calculate the area of a parallelogram.

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Question

How do I solve a parallelogram with more than 2 numbers?

Charlotte Cecillia Chang

Community Answer

Find which two measurements are the base and height. Then times the two numbers together.

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Question

Calculate the area of a parallelogram whose parallel sides are 3 cm and 5 cm.

Community Answer

You probably mean that the two longer sides are each 5 cm long, and the two shorter sides are each 3 cm long. In that case, the area is (5 cm)(3 cm) = 15 sq cm.

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