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100 × 3,14 × 10 × 26 = 81.640cm² = 8,164m²
Jari - Jari = 10 cm
Tinggi = 24 cm
s = √24² + 10²
s = 26 cm
Luas selimut = πrs
= 3,14 × 10 × 26
= 816,4
816,4 × 100 = 81.640 cm²
= 8,16 m²