Question

Bantu aku cara merngejakan pr luas segi banyak

Answer 1

Itu materi kelas 6 kan?
Aku bantu sebisanya ya :

2. L1 = 20 x 12 = 240 cm²
   L2 = 10 x 12 = 120 cm²
   L3 = 10 x 12 = 120 cm²
   L = L1 + L2 + L3 = (240 + (2 x 120)) cm²
                            = 240 + 240 cm² = 480 cm²


(Maaf kalau salah)

Answer 2

1. L1 = P X L = 10 X 25 = 250
    L2 = P X L = 2 X 15 = 30
    => L1 + L2 = 250 + 30 = 280

3. L1 = P X L = 20 X 10 = 200
    L2 = 1/2 X phi X r X r = 1/2 X 3,14 X 10 X 10 = 3,14 X 50 = 157
    => L1 + L2 = 200 + 157 = 357

(maaf kalau salah)