If a wire is bent into a square ,it's ara is 49cm2. If it is bent into a semi -circle , what will be its radius
side of square: 7cm
length of wire:28cm
semicircle:2r+PI*r=
or r(2+PI)=28 solve for r.
length of wire:28cm
semicircle:2r+PI*r=
or r(2+PI)=28 solve for r.