Question

If the length of an arc of a circle is 10 and its angular measure is 90° then what will be the circumference of the circle?​

Answer 1

Answer:

220/root 7

Explanation:

using application of trignometry we have to find the radius(r). After that we have to put the peeimeter formula and find out the perimeter by using the radius that we have.

Answer 2

Answer:

We have,

Length of the arc=10

Sector angle=90°

We know that,

Length of an arc= pi r thita/ 180°

=10. = 22/7 *r*90°/180°

=10/11= r

Now, Circumference= 2*22/7*10/11

=40/7