Answer:
2 hours and 15 minutes
Step-by-step explanation:
In total 660 rolls were made in all
I believe your mistake is that you are trying to use the sector area formula ti find arc length when there is already a formula for it.
The formula for it is

So first substitute the values in and then simplify!

Now simplify!
21 × 118 is 2478 so it's

When divided ou and multiplied, this is 21.62cm!
Answer:
u=1
Step-by-step explanation:
Where are the options? If you can provide them I’ll answer.