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~ P × L
~ 24 dm × 8 dm
~ 192 dm'2
Luas 2 (Setengah Lingkaran)
~ Diameter (d) = 24 dm - 10 dm = 14 dm
~ Jari-jari (r) = 14 : 2 = 7 dm
~ Luas = 22/7 × 7 × 7 × 1/2
= 77 dm'2
Jumlah Luas : Luas 1 + Luas 2
= 192 dm'2 + 77 dm'2
= 269 dm'2
Semoga Membantu^^
Maaf kalo misalkan salah...