Question

find the perimeter of the sector of a circle of radius 9 cm with central angle 70 degree​

Answer 1

Answer:28.996 cm

Step-by-step explanation:

Formula of circumference of a sector of a circle is $\frac{\alpha }{360} 2 \pi r$ where α is the subtended central angle.

So, putting the required numbers, we get the answer $\frac{7}{2} \pi$ or 10.996 cm.

Now, as they've asked the perimeter of the sector but you've only got the circumference part, add the radius twice.

So, final answer would be 28.996.

Hope it helps.

Thanks.