Question

Find the length $s$and area $A$. Round answers to three decimal places.

Short answer

The solution is $s\approx 7.854$cm and$A\approx 35.343$square cm .

Step-by-step solution

Step 1. Given information 

Step 2. Calculation 

Here the length is -

$s=r\theta$

$=9\times 50\times \frac{\mathrm{\pi }}{180}$

$\approx 7.854$

Now the area is -

$A=\frac{1}{2}{r}^2\theta$

$=\frac{1}{2}{\left(9\right)}^2\times 50\times \frac{\mathrm{\pi }}{180}$

$\approx 35.343$

Therefore, length $s$is$7.854$ cm and the area$A$ is$35.343$square cm .