Dibantu tolong no 5 aja bsk mau dikumpul tolong ya Please

Matpel : Matematika
Kelas : 8 SMP
Bab : Teorema Pythagoras


Jawaban :
[tex]1 \div 1 \div \sqrt{2} \\ ac \div ab \\ \frac{ac}{ab} = \frac{ \sqrt{2} }{1} \\ \frac{20}{ab} = \frac{ \sqrt{2} }{1} \\ ab \times \sqrt{2} = 20 \\ ab = 10 \sqrt{2} \: cm[/tex]

20 x cos 45° = 20 x 0,53 =10.6 cm