How many times larger is 400 than 4

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?

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Nellie is analyzing a quadratic function f(x) and a linear function g(x). will they intersect? f(x) g(x) graph of the function f of x equals one half times x squared, plus 2 x g(x) 1 5 2 10 3 15