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= √144+256
= √400
= 20
Luas Lingkaran = π.r²
= 3,14 . 10²
= 314 cm²
Luas Segitiga = A x T/2
= 12 x 16/2
=12 x 8
= 96 cm²
Luas Arsiran = Luas Lingkaran - Luas Segitiga
= 314 - 96
= 218 cm²
semoga beruntung