We are asked to find the area of the following trapezoid:
Then recall the formula for the area of a trapezoid :
Area = (B + b) H / 2
where B is the size of the longer base (in our case 4), b is the size of the shorter base (in our case 2)
and H is the trapezoid's height (in our case 2)
Then we use the formula as shown below:
Area = (4 + 2) (2) / 2 = 6 * 2 / 2 = 8 square units.