Jawab:
Penjelasan dengan langkah-langkah:
a. AE² = AD² - DE²
AE² = 13² - 12²
AE² = 169 - 144
AE² = 25
AE = V25
AE = 5
b. CD = AE + EB
CD = 5 + 15
CD = 20
c. BC = AD = 13
d. DAB = 180 - CBA
DAB = 180 - 112
DAB = 68
e. ABC = 112
f. ADC = ABC = 112
g. Tinggi jajaran genjang = DE = 12
h. Keliling = AB + BC + CD + AD = 20 + 13 + 20 + 13 = 66
i. Luas = AB x DE
Luas = 20 x 12
Luas = 240
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Jawab:
Penjelasan dengan langkah-langkah:
a. AE² = AD² - DE²
AE² = 13² - 12²
AE² = 169 - 144
AE² = 25
AE = V25
AE = 5
b. CD = AE + EB
CD = 5 + 15
CD = 20
c. BC = AD = 13
d. DAB = 180 - CBA
DAB = 180 - 112
DAB = 68
e. ABC = 112
f. ADC = ABC = 112
g. Tinggi jajaran genjang = DE = 12
h. Keliling = AB + BC + CD + AD = 20 + 13 + 20 + 13 = 66
i. Luas = AB x DE
Luas = 20 x 12
Luas = 240