Bashir find some nickels and pennies under the couch cushions how much (money in dollars) does he have if he has 120 nickels and
60 pennies?How much money (in dollars dose he have if he has x nickles and y pennies?
1 answer:
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Since there are 
in a circle, and central 
, you can see that the part "sliced out" by the central angle is 
of the whole circle.
This means that the length of the intercepted arc
is 
of the circumference of the circle. So,
This means that the length of the intercepted arc