Formula to find circumference is ;

Since the given circumference is 30 pi then,
30 pi = 2 pi radius.
30 = 2 radius
radius = 30/2
radius = 15
The radius is 15 for a circle tha has circumference of 30 pi
Answer:
W = 7
Step-by-step explanation:
1) Simplify 21/42 into 1/2
w/ 14 = 1/2
2) Multiply both sides by 14.
W = 1/2 · 14
3) Simplify
W = 14/29
4) Simplify (again)
W = 7
Answer:
The increase is 1150.
11.5 times the original value, or 1150% of it. That's a big increase, and I would not buy that thing, whatever it is.
Answer:
i do not know how to do this yet but it looks like a high school thing
Step-by-step explanation: