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= p x l
= 14 cm x 10 cm
= 140 cm²
Luas 1/2 lingkaran
= 1/2. π. r²
= 1/2 . 22/7 . (1/2 . 14)²
= 1/2 . 22/7 . 7²
= 11 . 7
= 77 cm²
Luas alas
= 140 cm² + 77 cm²
= 217 cm²
Volume prisma
= Luas alas x tinggi
= 217 cm² x 20 cm
= 4.340 cm³
Jawaban B