Question

what is the area? 8.5 mm 9 mm 16.3 mm square millimeters submit

Explanation:

Step1: Recall trapezoid area formula

The area \( A \) of a trapezoid is given by \( A=\frac{(a + b)h}{2} \), where \( a \) and \( b \) are the lengths of the two parallel sides (bases), and \( h \) is the height.
Here, \( a = 8.5\space\text{mm} \), \( b = 16.3\space\text{mm} \), and \( h = 9\space\text{mm} \).

Step2: Substitute values into formula

First, calculate the sum of the bases: \( 8.5+16.3 = 24.8 \)
Then, multiply by the height: \( 24.8\times9 = 223.2 \)
Finally, divide by 2: \( \frac{223.2}{2}=111.6 \)

Answer:

\( 111.6 \)