Jawaban:
78 ( C )
Penjelasan dengan langkah-langkah:
Sudut berperulus
3x + ( 2x + 10) = 180°
5x + 10° = 180°
5x = 170°
x = 34°
CDB = 2x + 10
= 2 × 34° + 10
= 68° + 10°
= 78° ( C )
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Jawaban:
78 ( C )
Penjelasan dengan langkah-langkah:
Sudut berperulus
3x + ( 2x + 10) = 180°
5x + 10° = 180°
5x = 170°
x = 34°
CDB = 2x + 10
= 2 × 34° + 10
= 68° + 10°
= 78° ( C )