Răspunsuri

2014-04-24T15:08:28+03:00
P=l+l+L+L=24
2xl+2xL=24
2(l+L)=24
l+L=12

l=L/3

L/3+L=12. Amplificam cu 3
L+3L=36
4L=36
L=36:4
L=9

l=L/3
l=9/3
l=3

2014-04-24T15:26:20+03:00
P = 2(L+ l )
l = 1/3 * L
rezulta ca  P = 2 (L + 1/3 *L)
24 = 2( L + 1/3 * L)
L + 1/3 * L= 12
(3L+L) = 36
4L =36
L =9 ( cm)

l= 1/3* 9=3 (cm)

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