Perhatikan gambar berikut 28 cm luas bangun tersebut adalah A 2464 cm tinggi 2 C 616 cm2 b 1.232 cm2 d 38 cm2
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Jawaban:
D. 308 cm²
Penjelasan dengan langkah-langkah:
Jari-jari (r) = 1/2d = 1/2(28) = 14 cm
L = 1/2 × Luas lingkaran
L = 1/2 × π × r²
L = 1/2 × 22/7 × 14²
L = 22/14 × 196
L = 22 × 14
L = 308 cm²