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tinggi = 12cm
volume = 314cm³
π = 3,14
s² = 5²+12²
s² = 25+144
s² = 169
s = √169
s = 13
luas selimut kerucut = πrs
luas selimut kerucut = 3,14·5cm·13cm
luas selimut kerucut = 3,14·65cm²
luas selimut kerucut =204,1cm²
jadi luas selimut kerucut adalah 204,1cm²