Area of a Trapezoid: Using variables

Calculate X according to the data in the figure:

2

Calculate X according to the data in the figure:

3

Express the area of the trapezoid by X

$4x^2+21x$

The trapezoid ABCD is shown below.

AB = AD

DC is twice as long as AB.

The area of the trapezoid is three times more than the length of AB.

How long is side AB?

2

Look at the trapezoid ABCD below.

Length of side AB = a

Side DC is 3 cm longer than AB.

Height (h) = $\frac{1}{2}$ cm

Calculate the length of side AB, given that the area of the trapezoid is 2a cm².

$\frac{1}{2}$

Shown below is the trapezoid ABCD.

Given in cm:

AB = 5

DC = 3

Height = h

Calculate the area of the trapezoid.

$4h$

The area of the trapezoid in the diagram is $9x$ cm².

Calculate AE.

$4$ cm

Calculate the area of the trapezoid in the diagram.

$x^2+1.5xy$ cm².

The area of the trapezoid in the diagram is 78 cm².

Calculate X.

$2$

The area of the trapezoid in the diagram is 14.4 cm².

Calculate X.

$3$ cm