Answer:
Length of arc AD = 15.7 cm
Step-by-step explanation:
Length of arc = 
Here, θ = Central angle subtended by the arc
r = radius of the circle
From the picture attached,
Central angle subtended by arc AD = 360° - (180° + 66.4°)
= 113.6°
Length of arc AD = 
= 
= 15.655 cm
≈ 15.7 cm
Length of arc AD = 15.7 cm
Answer:
= 9.2195 = 9.22
= 4.123
Step-by-step explanation:
Answer:
30 is the wrong one because it is not a factor of 100
30 60 90 120
20 40 60 80 100
Step-by-step explanation:
Solve using the Pythagorean theorem.
The hypotenuse is c.