Question

Tentukan panjang busur lingkaran yang berjari jari 14 cm memiliki sudut pusat
A.30°
B.90°
C.120°

Answer 1

Verified answer

Keliling lingkaran= π×d
= 22/7×28
= 88 cm

a. panjang busur= 30/360×88
= 1/12×88
= 7,3 cm

b. panjang busur= 90/360×88
= 1/4×88
= 22 cm

c. panjang busur= 120/360×88
= 1/3×88
= 29,3 cm