help

[likewhoa]

Which of the following can be a circumference of a square that is inscribed in a circle, which has a radius R?

(1) 2r * root3
(2) 2r (root3 +1)
(3)4r+root2
(4)4r*root3
(5)8r

answer: (2)

[cris]

circunference of a square???

I think there is a mistake here.

Could you check that?

[likewhoa]

circunference of a square???

I think there is a mistake here.

Could you check that?

oopsy...sorry!
it's 'length of a square'

[samirpandeyit62]

let side of square be s

& radius of circle is r

if we join two vertices of the square to make a diagonal, then this will divide the square into two 45-45-90 trinagles

with sides as s,s,2r

hence rt(2)*s = 2r

s = rt(2)*r

does the question require only the side or something else?