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d = 24 m
r = 12 m
Lingkar L. Ta
d = 24 + 2(3) = 30 m
r = 15 m
*r = ½ × d
L. Taman = πr² = 3,14 × 12² = 452,16 m²
L. Lingkar luar = πr²= 3,14 × 15² = 706,5 m²
L. Jalan= L. Lingkar luar - L. Taman
= 706,5 m² - 452,16 m²
= 254,34 m²
Jadi Luas jalan ialah 254,34 m²