- #1
Fractal314
- 14
- 0
I don't feel the formatting is right for this question because it's not a problem, it's just algebra I'm not getting.
A(r)= (pi)(r)^2
C= 2(pi)r
r= C/(2pi)
therefore,
A(c)= pi[c/(2pi)]^2
but I don't understand how this is supposed to equal A(c)= C^2/4pi
my attempt:
A(c)= pi(c/2pi)(c/2pi)
= pi(c^2/4pi)
= c^2pi/4pi
What am I doing wrong?
A(r)= (pi)(r)^2
C= 2(pi)r
r= C/(2pi)
therefore,
A(c)= pi[c/(2pi)]^2
but I don't understand how this is supposed to equal A(c)= C^2/4pi
my attempt:
A(c)= pi(c/2pi)(c/2pi)
= pi(c^2/4pi)
= c^2pi/4pi
What am I doing wrong?