Answer:
0.3
Step-by-step explanation:
30/(30+20+50) = 30/100 = 0.3
The length of a circumference: l=πD
l₁=π×5=5π
l₂=π×15=15π
Then l₂÷l₁=15π÷5π=3 and the answer is B)
The arc length, radius and the included angle are related as
where
is in radians.
The radius
is given by

Correct choice is (B).
Answer: (x-6)/2
Step-by-step explanation:
x=2y+6
x-6=2y
(x-6)/2=y
y=(x-6)/2