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= p x l
= 16 x 5
= 80 cm²
Luas 1/2 lingkaran
= 1/2 x x r²
= 1/2 x 3,14 x 2²
= 2 x 3,14
= 6,28 cm²
Luas keseluruhan
= 80 + 6,28
= 86,28 cm²