A = πr², where r is the radius. We are given A = 58, so plug that in to find r...

You are watching: If the area of a circle is 58 square feet, find the circumference.

58 = πr² solve for r...

58/π = r² (divide both sides by π)

√(58/π) = r (take the square root of both sides)

now simplify...

(√58)/(√π) = r

<(√58)(√π)>/<(√π)(√π)> = r

<√(58π)>/π = r

The formula for circumference is C = 2πr, where r is the radiusso we have

C = 2π(<√(58π)>/π) now simplify...

C = 2√(58π) (the 2 pi"s cancel out)

C = 26.9972124 (crunch in your calculator)

The approximate radius of the circle in feet is 14.5

Solution:

Given, a tile artist is placing tiles in a circular mosaic pattern and the area of the circle is 658 square feet,

We have to find what is the approximate radius of the circle in feet?

The area of a circle is found with the formula where "y" represents 3.14 and r is radius. So now, according to given information, Hence, the radius of the given circle is 14.5 feet approximately

Step-by-step explanation:

658=pi*r^2 Given

658=3.14*r^2 Substitution

209.55=r^2 Division property of equality

√209.55=√r^2 square root property of equality

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