Square s3

Calculate the diagonal of the square, where its area is 0.49 cm square. And also calculate its circumference.

Correct result:

u =  0.9899 cm
o =  2.8 cm


S=0.49 a=S=0.49=710=0.7 u=2 a=2 0.7=0.9899 cm
o=4 a=4 0.7=145=145 cm=2.8 cm

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