Squares ratio

The first square has a side length of a = 6 cm. The second square has a circumference of 6 dm. Calculate the proportions of the perimeters and the proportions of the contents of these squares? (Write the ratio in the basic form). (Perimeter = 4 * a, content S = a ^ 2)

Correct result:

r1 =  2:5
r2 =  4:25


a=6 cm o2=6 dm cm=6 10  cm=60 cm  o2=4b b=o2/4=60/4=15 cm o1=4 a=4 6=24 cm  r1=o1/o2=24/60=25=0.4=2:5
S1=a2=62=36 cm2 S2=b2=152=225 cm2  r2=S1/S2=36/225=425=0.16=4:25

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