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2014-09-18T21:14:37+03:00
L² = 1296 m² / √
l = 36 cm

b) l² = 28,09m² / √
l = /20,89 m
l = / 280,9 cm.
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2014-09-18T23:41:37+03:00
A=l^2
A=1296 m^2⇒ l=V1296 m ⇒ l= 36 m

A=28,09 m^2=2809 dm^2
⇒ l=V2809 dm=
2 5 2