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L²=½ x 22/7 x14cm x14cm=308cm²
________+
868cm².c.
d= 28:2= 14cm
π×r×r:2
22/7×14×14=616cm:2=308cm
luas persegi panjang
p×l
28cm×20cm=560cm
luas gabungan
luas lingkaran + luas persegi panjang
308cm+560cm=868cm
Jawaban (C) 868cm