Answer:
B
Explanation:
The figure you are describing is a trapezoid. To calculate the area of a trapezoid, you can use the formula: (base1 + base2) x height / 2.
In this case, the two parallel sides are the bases of the trapezoid, and the height is the perpendicular distance between the bases.
Given the information in the problem, the top base is 5 centimeters, the bottom base is 3 centimeters + 3.4 centimeters = 6.4 centimeters, and the height is 2.7 centimeters.
So we can calculate the area of the trapezoid as: (5 cm + 6.4 cm) x 2.7 cm / 2 = (11.4 cm) x 2.7 cm / 2 = 30.78 cm2
Therefore, the total area of the figure is 30.78 cm2. Among the options given, only option B, "31.49 cm2", is close to 30.78 cm2 and it is the correct answer.