Oh honey, no. Linear means a straight line relationship between two variables, like y = mx + b. But 2πr is the formula for the circumference of a circle, not a straight line. So, in short, 2πr is definitely not linear.
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Oh, dude, no way! 2πr is not linear; it's actually the formula for calculating the circumference of a circle. Linear functions are like those boring straight lines that have a constant slope, not the cool, curvy stuff you find in circles. So, yeah, 2πr is definitely not linear, but it's got its own circular charm.
Recall the equation A = pi * r^2. You've given the information that A = 289 pi. Now, simply solve the equation for r: A = pi * r^2 289 pi = pi * r^2 289 = r^2 sqrt(289) = r 17 = r
C=2(pi)r A=(pi)r2 If C=A, then 2(pi)r=(pi)r2. Divide both sides by r: 2(pi)=(pi)r. Divide both sides by (pi): 2=r. Therefore, if the radius of a circle is 2 ft., the circumference is 2 sq. ft.
C = 2*pi*r 8 = 2*pi*r 4 = pi*r r = 4/pi
2(pi r 2) + (2 pi r)* h
let c bet the circumference and r be the radius. c = 2 pi r since c is 60 pi 60pi = 2 pi r divide both sides by 2 pi 30 = r