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44cm = 2··r
44cm×7 = 44r
308cm = 44r
r =
r = 7cm
garis pelukis (s)
s² = r²+t²
s² = 7²+24²
s² = 49+576
s² = 625
s = √625
s = 25
garis pelukis = 25cm
luas selimut kerucut = πrs
luas selimut kerucut = ·7cm·25cm
luas selimut kerucut = 22cm·25cm
luas selimut kerucut = 550cm²
jadi luas selimut kerucut adalah 550cm²