a) figura 1:
2cm * 3cm = 6cm²
figura 2:
[tex]\frac{2cm * 3cm}{2}[/tex] = 3cm²
b) figura 1:
[tex]\frac{(4cm+2cm) * 2cm}{2}[/tex] = 6cm²
figura 2:
[tex]\frac{(1cm+3cm) * 2cm}{2}[/tex] = 4cm²
c) figura 1:
P1 = 3,5cm * 1cm = 3,5cm²
P2 = 4,5cm * 1,5cm =6,75cm²
Pc= P1 + P2
Pc= 3,5cm² + 6,75cm² = 10,25cm²
figura 2:
P1 = 1cm * 1cm = 1cm²
P2 = 1cm * 3cm = 3cm²
Pc = 1cm² + 3cm² = 4cm²
d) figura 1:
P1 = [tex]\frac{1cm * 4cm}{2}[/tex] = 2cm²
P2 = [tex]\frac{1cm * 1,5cm}{2}[/tex] = 0,75cm²
P3 = [tex]\frac{(1,5cm+4cm) * 2cm}{2}[/tex] = 5,5cm²
Pc= 2cm² + 0,75cm² + 5,5cm² = 8,25cm²
figura 2:
P1 = 2cm * 1,5cm = 3cm²
P2 = 1cm * 2cm = 2cm²
Pc = 3cm² + 2cm² = 5cm²
Pc - pole całkowite
