Problema Solution
What happens to the ratio of the area to the circumference of a circle when the radius is quadrupled?
Answer provided by our tutors
r = the radius of the circle
A = r^2*pi the area of the circle
C = 2r pi the circumference of the circle
A/C = (r^2*pi)/(2r pi) = r/2
the radius is quadrupled: 4r
A/C = 4r/2 = 4(r/2)
the ratio of the area to the circumference of a circle is quadrupled as well.