Question

Find the perimeter of sector of a circle with measure of arc 90° and radius 7cm

Answer 1

here the formula with answer hope this will help you out

Answer 2

Answer:

25 cm

Step-by-step explanation:

We know that perimeter of a  circle is = $=2\pi{r}$

Where, r is the radius of the circle.

The perimeter of quarter of circle = Quarter of the perimeter of the whole circle + 2 side (radius)

therefore the perimeter = arc AB +OB+OA

$2\times\frac{22}{7}\times7+2\times7\\\\=11+14\\\\=25$

The perimeter of the arc is 25 cm