Question

10.9 mm 17 mm square millimeters

Explanation:

Step1: Recall triangle area formula

The area of a triangle is $\frac{1}{2} \times \text{base} \times \text{height}$

Step2: Substitute given values

Base = 17 mm, Height = 10.9 mm
Expression: $\frac{1}{2} \times 17 \times 10.9$

Step3: Calculate the result

First compute $17 \times 10.9 = 185.3$, then $\frac{185.3}{2} = 92.65$

Answer:

92.65 square millimeters