Odpowiedź:
a)
P = a • b
P = 3 cm • 16 cm
P = 48 cm²
Obw = 2a + 2b
Obw = 2 • 3 cm + 2 • 16 cm
Obw = 6 cm + 32 cm
Obw = 38 cm
b)
P = a²
P = (8 cm)²
P = 64 cm²
Obw = 4a
Obw = 4 • 8 cm
Obw = 32 cm
Hej!
a)
[tex]a=3 \ cm, \ b=16 \ cm\\\\P=a\cdot b=3 \ cm\cdot16 \ cm=\boxed{48 \ cm^2}\\\\Ob=2a+2b=2\cdot3 \ cm+2\cdot16 \ cm=6 \ cm+32 \ cm=\boxed{38 \ cm}[/tex]
b)
[tex]a=8 \ cm\\\\P=a^2=(8 \ cm)^2=\boxed{64 \ cm^2}\\\\Ob=4a=4\cdot8 \ cm=\boxed{32 \ cm}[/tex]
Pozdrawiam! - Julka
