Odpowiedzi

2009-12-08T16:49:30+01:00
A=8 cm
d=10 cm
P, Ob=?
P=ab
Ob= 2a + 2b
b=?
Z tw. Pitagorasa:
a² + b² = c²
8x8 + b² = 10x10
64 + b² = 100
b² = 100 - 64
b² = 36
b=6

P=ab= 8x6 =48
OB = 2a + 2b= 2x8 + 2x6 = 16+12=28
1 1 1
2009-12-08T16:50:28+01:00
A2+b2 = c2
c2-a2 = b2
100 - 64 = b2
b2=36
b=6

ob = 2*8 + 2*6
ob= 28cm

p=8*6 = 48cm2