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= Llingkaran 1 - L lingkaran2
= (3,14 . 4 . 4) - (3,14 . 2 . 2)
= 50,24 - 12,56
= 37,68 cm^2
2. V limas = 1/3 x Luas alas x tinggi
= 1/3 x (10^2) x 12
= 400 cm^3
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