A wire of length 2 units is cut into two parts which are bent
respectively to form a square of `s i d e=x`
units and a circle of `r a d i u s=r`
units. If the sum of the areas of the square and
the circle so formed is minimum, then :
(1) `2x=(pi+4)r`
(2) `(pi+4)x=pir`
(3) `x=2r`
(4) `2x=r`
A. `2x=(pi+4)r`
B. `(4-pi)x=pi r`
C. `x=2r`
D. `2x =r`
