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=√100
= 10 cm
Ls = πrs
= 3.14 x 6 x 10
= 188.4 cm persegi
s2 = r2 + t2
s2 = 6kuadrat + 8kuadrat
s2 = 36 + 64
s2 = 100
s = akar dari 100
s = 10
b. luas selimut
luas selimut = phi x r ( r + s)
= 3,14 x 6 ( 6 + 10 )
=18,84 x 16
=301,44 cm2