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= 2(12 +6) + 1/2 ( pi * R *2)
= 36 + 1/2 ( 22/7 * 7 *2 )
= 36 + 22
= 58
luas = Persegi Panjang + 1/2 LINGKARAN
=12 * 6 + 1/2 ( pi * R * R )
= 72 + 1/2 (22/7 *7 *7 )
= 72 + 77
= 149