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L = π.r ( s + r )
= 3.14 .10( 26 + 10)
= 31.4 (36)
= 1130,4 cm2
=1/3.314.24
=1/3.7536
=2512 cm
Luas Permukaan
πr² + π.r.s
=314 + 3.14.10.26
=314 + 816,4
=816,4 cm
klo gak salah lho.....