Question

mohon menggunakan cara ya.
terima kasih.​

Answer 1

2. Keliling (K) = atas + 2(kiri_atas) + kiri bawah
+ kanan bawah + kanan atas
Keliling (K) = 24 + 2(6 + 8) + (18-6) + (24-(6+8)) + (18-8)
Keliling (K) = 24 + 2(14) + 12 + (24-14) + 10
Keliling (K) = 24 + 28 + 12 + 10 + 10
Keliling (K) = 84 m

a. 2 putaran = 2K = 2(84) = 168 m/siswa

b. Banyak lampu = K/2 = 84/2 = 42 lampu