October 2018 1 14 Report
Please jawab yaaa, buat besok :)
1. Luas juring= 165 cm². Besar sudut 270°. Hitung luas permukaan kerucut! (Maaf gambar kurang jelas).
2. Diketahui kerucut dengan t : r = 3 : 4, dan garis pelukis = 35 cm. hitung luas permukaan selimut tabung!

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