Odpowiedzi

2010-01-29T20:02:27+01:00
A - pierwszy bok
b - drugi bok

2a+2b=24
a=b-5

2(b-5)+2b=24
a=b-5

2b-10+2b=24
4b=34
b=8½

a=8½-5
a=3½

a=3½
b=8½

P=ab
P=3,5*8,5
P=29,75cm²
2010-01-29T20:05:15+01:00
2a + 2b = 24

a = b -5

2 (b - 5) + 2b = 24
2b - 10 + 2b = 24
4b = 34
b = 8,5

a = 8,5 - 5
a = 3,5

P: ab
P: 8,5 * 3,5
P: 29,75