bantu jawab pake cara.
Jawaban:
A 674 cm²
Penjelasan dengan langkah-langkah:
Dik = r = a = 20 cm
t = 18 cm
L total = 1/4 L lingkaran + L jajar genjang
= 1/4 πr² + a×t
= 1/4×3,14×20² + 20×18
= 1/4×3,14×400 + 360
= 3,14×100 + 360
= 314 + 360
= 674 cm² A
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