So use half the surface area formula: SA=2πr^2 and plug in what you already know
since you don't know the radius yet, solve for it using the circumference
C=2πr
514.96=3.14(2)r
82=r
SA=2π(82)^2
SA=6.28(6724)
SA=42,226.72
so your answer is 42,226.72 yards squared
The answer to the question is a
<span>-They help to prevent bank runs by reassuring the public that banks will not make too many loans and run out of cash.
-They help to facilitate transfers of funds between banks when a customer from one bank writes a check to a customer of another.
-They help to control the money supply.
Hope I helped </span>
none of them are a right angle since there isn't an angle on any of those measurements that are 90 degrees.
