Jawab:
No. 8 hasilnya 15cm2
Penjelasan dengan langkah-langkah:
Luas = (a x t)/2 = (10 x 3)/2 = 15 cm2
8.luas pqr = a×t : 2
= 10×3:2
= 30:2
=15 cm²
9. ADB = 90 derajat
DBA = 30 derajat
jadi 20 : 2= 10
gini caranya
30:60:90
x:√x:2x
x:√x:20
10:√10:20
jadi AD = 10 cm
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Jawab:
No. 8 hasilnya 15cm2
Penjelasan dengan langkah-langkah:
Luas = (a x t)/2 = (10 x 3)/2 = 15 cm2
8.luas pqr = a×t : 2
= 10×3:2
= 30:2
=15 cm²
9. ADB = 90 derajat
DBA = 30 derajat
jadi 20 : 2= 10
gini caranya
30:60:90
x:√x:2x
x:√x:20
10:√10:20
jadi AD = 10 cm