calculate area of a sector with given diameter and central angle
Check the final answer first, then review the worked steps.
Problem
calculate area of a sector with given diameter and central angle
Step-by-step solution
The radius $r = 18/2 = 9$ cm. The area of the shaded sector is $\frac{270}{360} \times \pi r^2 = 0.75 \times \pi \times 81 \approx 190.85$ cm$^2$.
Answer
191 \text{ cm}^2