Question

Pomoże ktoś?
+(60pkt)​

Answer 1

Odpowiedź:

Pp = (3cm+9cm)×8cm ÷ 2 = 12cm × 4cm = 48cm²

P1 = 5cm × 8cm = 40cm²

P2 = 5cm × 9cm = 45cm²

P3 = 5cm × 10cm = 50cm²

P4 = 5cm × 3cm = 15cm²

Pb = 5cm × (8cm+9cm+10cm+3cm) = 5cm × 30cm = 150cm²

Pc = 2×Pp + Pb = 2×48cm² + 150cm² = 96cm² + 150cm² = 246cm²

Answer 2

Odpowiedź:

a = 9 cm

b = 3 cm

c = 10 cm

h = 8 cm

H = 5 cm

P₁ = h · H = 8 cm · 5 cm = 40 cm²

P₂ = a · H = 9 cm · 5 cm = 45 cm²

P₃ = c · H = 10 cm · 5 cm = 50 cm²

P₄ = b · H = 3 cm · 5 cm = 15 cm²

Pb = P₁ + P₂ + P₃ + P₄

Pb = 40 cm² + 45 cm² + 50 cm² + 15 cm² = 150 cm²

Pc = 2 · Pp + Pb

Pc = 2 · 48 cm² + 150 cm² = 96 cm² + 150 cm² = 246 cm²