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luas lingkaran = 3,14 x 5 x 5 = 78,5
luas total = 178,5
keliling = 5 + 5 + 5 + 5 + (1/4 x 3,14 x 10) + (3/4 x 3,14 x 10)
= 20 + 31,4
= 51,4