Question

Tolong bantu ya kak, dg caranya

Answer 1

Verified answer

Misalkan sudut pusat lingkaran = y

Panjang busur = y/360° × Keliling lingkaran
13 cm = y/360° × π × d
13 cm = y/360° × 3,14 × 8 cm
13 cm = y/360° × 25,12 cm
13 cm × 360° = y × 25,12 cm
4680°cm = y × 25,12 cm
y = 4680°cm / 25,12 cm
y = 186,3°

Maka sudut pusat lingkaran adalah 186,3°