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= 14 cm x 21 cm
= 294 cm²
r = diameter : 2
= 14 : 2
= 7 cm
Luas lingkaran = π r²
= 22 x 7 x 7
7
= 22 x 7
= 154 cm²
Luas keseluruhan = 294 cm² + 154 cm²
= 448 cm²