Question

A copper wire in the form of a circle, encloses an area of 616 cm . If the same wire is bent to form a square, find its area

Answer 1

area of circle is 616cm .
area= πrsq
616= 22÷7×r sq
616×7÷22=r sq
4312÷22= r sq
196= r sq
√196 = r
14= r
side of sq is 14 cm
so it's area is 4×side
4×14
56cm sq