Ada yg tau jawaban nya gak ? butuh banget besok mau di kumpul

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Ada yg tau jawaban nya gak ? butuh banget besok mau di kumpul​

2. – x² = 13² – 12²

= 169 – 144

= 25

x = √25 = 5

– y² = 17² – 15²

= 289 – 225

= 64

y = √64 = 8

– r² = 24² + 7²

= 576 + 49

= 625

r = √625 = 25

3. misal jarak = r

r² = 80² + 60²

= 6.400 + 3.600

= 10.000

r = √10.000 = 100 km

4. DE² =CD² – CE

= 20² – 12²

= 400 – 144

= 256

DE = √256 = 16 cm

AD = AB

AD² = DE² + AE²

= 16² + (42 – 12)²

= 256 + 30²

= 256 + 900

= 1156

AD = √1156

= 34 cm

AB = AD = 34 cm


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