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2014-05-06T18:24:38+03:00
Apatrat=l²
a)361=l²   
l=√361
l=19
b)l²=5.76
l=√5.67
l=2.4
c)l²=9.61
l=√9.61
l=3.1
2 5 2
2014-05-06T18:24:59+03:00

4l=361=>l=361:4=>l=90 cm

4l=576=>l=576:4=>l=144 cm

4l=961=>l=961:4=>l=240 cm