Question

12. A wire when bent in the form of a square encloses an area of 756.25 cm .m
same wire is straightened and bent into a circle, find the radius of the Circle
formed.​

Answer 1

Answer:

Radius(r)=17.5cm

Step-by-step explanation: sidexside = area of square= 756.25 or side=(756.25)^1/2= 27.5 cm : now perimeter or length of the wire =4x side=27.5 cmx4= 110 cm and circumference of circle(2xpixr)-=110 ; or r=35/2cm=17.5cm (putting pi=22/7)

Answer 2

Step-by-step explanation:

circumference=756.25cm

radius=?

circumference=2 πr

756.25=2×22/7×r

756.25=44/7r

756.25×7/44=r

120.31=r