+/- 2.5060 approx.
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± 25.059928
Area = p* r2 628 ft2 = pi*r2 divide both sides by pi, which is the coefficient of r2 199.8986 = r2 Take square root each side 14.1 feet = radius =============
There are infinitely many of them. They include square root of (4.41) square root of (4.42) square root of (4.43) square root of (4.44) square root of (4.45) square root of (5.3) square root of (5.762) square root of (6) square root of (6.1) square root of (6.2)
A principal square root is any square root that's answer is positive, and a perfect square root is a square root that's answer is an integer.
square root of 20 = square root of 4 * square root of 5. square root of 4 = 2, so your answer is 2 square root of 5.