Answer:
B. 9π/20
Step-by-step explanation:
Which is the length of HJ expressed in terms of π?
PLZ help
The formula to calculate arc length when central angle is in degrees =
Arc length = θ/360 × 2πr
r = radius = 1
θ = 81°
Hence:
Arc length in π =
= 81/360 × 2 × π × 1
= 162π/360
= 9π/20
Therefore, the arc length = 9π/20
Option B is the correct option
