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L= ½ π d
L= ½ x 22/7 x 14
L= 22 cm²
2. Luas segitiga :
L= ½ x alas x tinggi
L= ½ x 14 x 4
L= 28 cm²
Luas bangunan : Luas ½ lingkaran + luas segitiga= 22+28= 50 cm²