Area of a Parallelogram: Calculate The Missing Side based on the formula

Look at the parallelogram in the figure.

Its area is equal to 70 cm².

Calculate DC.

The formula for the area of a parallelogram:

Height * The side to which the height descends.

We replace in the formula all the known data, including the area:

5*DC = 70

We divide by 5:

DC = 70/5 = 14

And that's how we reveal the unknown!

$14$ cm

Look at the parallelogram in the figure below.

Its area is equal to 40 cm².

Calculate AE.

We are told that ABCD is a parallelogram,$AB=CD=8$According to the properties of a parallelogram, each pair of opposite sides are equal and parallel.

Hence to find AE we will need to use the area given to us in the formula in order to determine the area of the parallelogram:

$S=DC\times AE$

$40=8\times AE$

We divide both sides of the equation by 8:

$8AE:8=40:8$

$AE=5$

$5$ cm

The area of parallelogram ABCD is 88 cm².

Calculate the length of side DC.

$11$ cm

Below is the parallelogram ABCD.

Its area is equal to 100 cm².

Calculate the length of side AD.

$16.67$ cm

The parallelogram ABCD has an area equal to 60 cm².

Calculate the length of BE.

$5$ cm

Given the parallelogram of the figure

The height of the side AD equal to 4 cm

The area of the parallelogram is equal to 40 cm².

Find AD

$10$ cm

Look at the parallelogram ABCD.

The area ABCD is 60 cm².
$AD=8$

Calculate the height of ABCD.

7.5

Calculate X based on the data from the figure:

9

Calculate the area of the parallelogram ABCD using the following data:

The area of ABCD is 40 cm².

$BC=5$

$AB=8$

5

Calculate X based on the data in the figure:

7

ABCD is a parallelogram.

The area is equal to 30 cm².

Calculate AD.

It is not possible to calculate.

ABCD is a parallelogram.

DC is equal to 4 cm.

The area of the parallelogram is 82 cm².

Work out AE.

$20\frac{1}{2}$ cm

Look at the parallelogram of the figure.

Its area is equal to 156 cm².

Calculate AB.

$13$ cm

The parallelogram ABCD is shown below.

Its area is equal to 63 cm².

Calculate side AE.

It is not possible to calculate.

Look at the parallelogram ABCD.

Calculate DF using the following:

$AB=8$

$BC=16$

$BE=10$

20

Look at the parallelogram ABCD.

The area of ABCD is $4x$.

$AE$ is the height of the parallelogram.

$AE=2$

Calculate AD.

2X

Using the data from the figure, calculate X:

10

The area of the parallelogram below is 56.

BE is its height.

Calculate x.

$9$