Pliss tolong bantu aku sampai buat dua ini....tolong bantu y kakak2 jenius....sama caranya sedetail detailnya
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Luas & keliling Persegi panjang:
L = 28 x 35
= 980 cm²
Luas 1/2 lingkaran:
L = 1/2 πr²
= 1/2 x 22/7 x 14 x 14
= 22 x 14
= 308
Luas Bangun:
L = 980 - 308
= 672 cm²
Keliling = 28 + 35 + 35 + (22/7 x 1/2 x 28)
= 28 + 70 + (22 x 2)
= 98 + 44
= 142 cm
Semoga membantu