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Tinggi kerucut = 9 cm
Diameter kerucut = 24 cm → r = 12 cm
Ditanyakan : Luas selimut kerucut
Jawab :
Luas selimut kerucut = π r s
s² = r² + t² → s² = 12² + 9² → s = √225 = 15 cm
Luas selimut kerucut = π r s
= 3,14 x 12 x 15
= 565,2 cm²
Jadi, luas selimut kerucut adalah 565,2 cm² (A)