Question

what is the length of a 90 degree arc in a circle with a radius of 16cm.

Answer 1

Sector length (l) = (Ѳ/360)*2∏r

r = 16 ,Ѳ = 90degrees

l = (90/360) x 2 x ∏ x 16

l = 8∏

l = 25.13

Length of a 90 degree arc in a circle with a radius of 16cm is 25.13 cm