A wire in the shape of a circle encloses the area
38.5 sqcm. if the wire is rebent to form a square,find the of the square.

Question

A wire in the shape of a circle encloses the area 
38.5 sqcm. if the wire is rebent to form a square,find the of the square.

anonymous · Answer

@terenzreignz

terenzreignz · Answer

Find the ? of the square...

anonymous · Answer

area

terenzreignz · Answer

Okay, let's go for basics...
If you have an 8cm wire, bent into a square, how long would one side be?

anonymous · Answer

first i have to put the formula for area of circle
pir^2= 38.5
from here i got value of r = 7/2

terenzreignz · Answer

You got an exact fraction? I find this hard to believe...

anonymous · Answer

then i used circumference of a circle = 2 *pi *r=2*pi*(7/2)=22cm
now, circumference of a cirlce = perimeter of a wire=22cm

anonymous · Answer

plse tell till now i have solved the sum correct

terenzreignz · Answer

Approximately, yeah...
Are you sure you needed help with this? :D

anonymous · Answer

yes.. i m not sure that my answer is correct or not

terenzreignz · Answer

Well, I'll vouch for you, on the grounds that you understand that that's just an approximation (as if you can get an exact answer with pi involved, but whatever...)

anonymous · Answer

i got the area of a square = 121/4 cm^2

terenzreignz · Answer

That seems about right; well done :)

anonymous · Answer

thank you