Answer: C. \(57.46\ cm^2\)
Step-by-step explanation:
The area of trapezoid is given by :-
\(\text{Area}=\dfrac{1}{2}(a+b)h\), where a and b area the bases and h is height of the trapezoid.
Given: The length of the bases are 9.2 cm and 7.7 cm.
The height of the trapezoid = 6.8 cm
Now, the area of a trapezoid will be:-
\(\text{Area}=\dfrac{1}{2}(9.2+7.7)(6.8)\\\\\Rightarrow\text{Area}=57.46\ cm^2\)
Hence, the area of a trapezoid = \(57.46\ cm^2\)
