Question

find the length of an arc of a circle which subtends an angle of 108 °at the centre ,if the radius of the circle is 15 cm.​

Answer 1

Answer:

we know that

angle (radian)= length of an arc/radius

then given values

angle=108°,radius=15cm

change angle into radian

=108×π\180

=3π/5

now,

length of an arc =angle × radius

=3π/5×15

=9π

=9×22/7

=28.285cm

Answer 2

Answer:

Step-by-step explanation: