5dregensleyerjawab soal no 1 tara = bruto - neto = 120 - 117 = 3 tara% = tara/bruto x 100% = 3/120 x 100 = 1/40 x 100 = 2,5%
jawab soal no 2 luas ABC L = a x t : 2 = 5 x 12 : 2 = 5 x 6 = 30 cm² luas ABD L = a x t : 2 = ( 5 + 8 ) x 12 : 2 = 13 x 6 = 78 cm² Luas ACD L = 78 - 30 = 48 cm²
tara = bruto - neto
= 120 - 117
= 3
tara% = tara/bruto x 100%
= 3/120 x 100
= 1/40 x 100
= 2,5%
jawab soal no 2
luas ABC
L = a x t : 2
= 5 x 12 : 2
= 5 x 6
= 30 cm²
luas ABD
L = a x t : 2
= ( 5 + 8 ) x 12 : 2
= 13 x 6
= 78 cm²
Luas ACD
L = 78 - 30
= 48 cm²