Question

A copper wire when bent in the form of a square encloses an area of 121cm2. If the same wire is re-bent into a circle, find the are of the circle.

Answer 1

Answer:

area of square =(side)

$side {}^{2} = 121cm {}^{2}$

side =

$\sqrt{121 } = 11$

so side of square is 11

and radius of circle =11/2=5.5

so area of circle =

$\pi {r}^{2}$

22/7×5.5×5.5=6655/70

$^{} = 97.671cm {}^{2} approx.$