Question

Bantuin NO 35 (PAKE CARA) buat latihan UN....

Answer 1

Luas permukaan = 2 × luas selimut kerucut + luas selimut tabung =
Luas selimut kerucut = Πrs = s = 8^2 + 6^2 = 100 = √100 = 10 cm = 3,14 × 6 cm × 10 cm = 188,4 cm^2 × 2 = 376,8 cm^2
Luas selimut tabung = 2Πrt = 2 x 3,14 × 6 cm × 10 cm = 376,8 cm^2 = 376,8 cm^2 + 376,8 cm^2 = 753,6 cm^2 (C)