Luas bangun pada gambar soal nomor 9 adalah......cm

<p>9. Diamater (d) = 21 cm</p><p>&nbsp; &nbsp; &nbsp;Keliling = Keliling 3/4 lingkaran + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (3/4 x 𝞹 x d) + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (3/4 x 22/7 x 21) + 21</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 49,5 + 21</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 70,5</p><p>&nbsp; &nbsp; &nbsp;Jawaban : A</p><p>&nbsp;</p><p>10. Luas = 3/4 x 1/4 x 𝞹 x d²</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 3/16 x 𝞹 x d²</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 3/16 x 22/7 x 21 x 21</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 259,875 cm²</p><p>&nbsp; &nbsp; Jawaban : B</p>