Question

if the diameter of a circle is 16 cm how long is the arc intercepted by a central angle of 45 degree​

Answer 1

if the diameter is 16 then the radius of the circle is 8...

so therefore the circumference of the circle is of =2× π×r

= 16 π

45° is the eighth part of the circle so there for total circumference divided by 8 will be equal to 45 degrees of circumference

= 16π/8

= 2π

=2 ×3.14

=6.28