Answer:
a. 227 cm
b. 495 cm
Step-by-step explanation:
a. Radius of arc = sin(½θ) = 2.10/r
θ = (360-225)/2 = 67.5
Radius of arc = sin(67.5) = 2.10/r
r = 2.10/sin(67.5) = 2.273 m = 227 cm (nearest cm)
b. Length of arc = θ/360*2πr
Take π as 3.14
r = 210 cm
θ = 360 - 225 = 135°
Length of arc = [tex] \frac{135}{360}*2*3.14*210 = 495 cm [/tex] (to nearest cm)
