100 Things Every Designer Needs to Know About People (Voices That Matter)

100 Things Every Designer Needs to Know About People (Voices That Matter)

Matematika tolong kak satu soal saja​

tolong kak satu soal saja​

Jawaban:

Y=20

Penjelasan dengan langkah-langkah:

perbandingan sisi segitiga istimewa

5:4:3

Y:16:12

16:4=4

4×5=20

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