Question

please solve this question no 1 ,2,3

Answer 1

1 ) side of a square = perimeter /4
= 26/4=6.5cm
Side of another square = sqr root of its area

$\sqrt{121 {cm}^{2} } = 11cm$
ratio = 6.5:11= 65:110=13:22


2) a:b 2:3 , b : c = 5:7
a: b : c = 10:15:21
let the bill share be 10x, 15x, 21x
(10+15+21)x =1104
46x =1104
x =24
a=240 ,b=360 ,c, = 504


3) third proportion = a:b =b:c
6:18=18:c
c=18*18/6=54