Keliling taman tersebut adalah ……. (π = 22)
7
Jawaban:
Panjang busur BC = BC
BC = 1 × keliling bulat
2
BC = 1 × π × d
2
BC = 1 × 22 × 70
2 7
BC = 110 m
Keliling taman = AB + BC + CD + AD
= 100 + 110 + 100 + 70 = 380 m