Question

Find perimeter of a sector of a circle whose central angle is 90° and radius is 7 cm. ​

Answer 1

Answer:

answer :- 11cm

Step-by-step explanation:

Since the central angle is 90°, it means it is Quad-circle.

Now, radius =7cm

Then, length of the arc = perimeter/4

Perimeter of Quad-circle=

$\frac{2\pi \: r}{4}$

=

=

$\frac{2 \frac{22}{7?} \times 7 }{4}$

=11 cm