Answer:7.5π
Step-by-step explanation:
Φ=360-90
Φ=270
Radius=r=5
Length of arc=Φ/360 x 2 x π x 5
Length of arc=270/360 x 2 x π x 5
Length of arc=0.75 x 2 x π x 5
Length of arc=7.5π
treonvty trwqnty ewuit
x = cos (47) = Pi/3, cos 47 = X/3
x = 2.05, 2.05 (2.05)²
