Question

Tolong kerjaaan soal ini ya...Sama cara2 nya

Answer 1

1. L1 = 1/2 x a x t = 1/2 x 14 x 12 = 84 cm2
    L2 = (a+b) : 2 x Tinggi = 14+16 : 2 x 8 = 120 cm2
    L1 + L2 = 84 + 120 = 204 cm2

2. L1 = 1/2 x a x t = 1/2 x 20 x 24 = 240 cm2
    L2 = 1/2 x π x r x r = 1/2 x 3,14 x 10 x 10 = 157 cm2
    L1 + L2 = 240 + 157 = 397 cm2

Answer 2

1.luas trapesium =1/2 (16+14) x 8 = 120
 luas segitiga = 1/2 x 14 x 12 = 84
jadi 120 + 84 = 204 cm²
2.luas 1/2 lingkaran = 1/2 x 314/100 x 10 x 10 =157
 luas segitiga = 1/2 x 24 x 20 = 240
jadi 157 + 240 = 397 cm²