Answer:
35.4 mm²
Explanation:
The area of a sector is given by
[tex]A = \frac{1}{2} r^2\theta[/tex]
where r is the radius and θ is the central angle in radian.
Therefore,
[tex]A = \frac{1}{2}\times4.5^2\times3.5 = 35.4375 \text{ mm}^2 = 35.4\text{ mm}^2[/tex]
