Jawab pertanyaan saya pls

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Jawab pertanyaan saya pls

Jawaban:

1.a) BC = √20²+15² = √625 = 25 cm

b) ( 2×150 )+ (560) +(700) + (420) = 1980 cm ²

2.a) BC = √225+64 = √289 = 17 cm

b) (2×120) + (2×340) + 320 = 1240 cm²

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