mobil bergerak dengan roda berputar 1000 kali, dapat menempuh jarak 1,57 km tentukan diameter ban mobil tersebut

keliling ban = 157000 : 1000 = 157 cm
keliling ban = π.d
=3,14.d
157 =3,14.d
d = 157 : 3,14 = 50 cm


good luck.. be a the best... ;-)

Jarak. = keliling roda . putaran
1,57 km = keliling roda . 1000
157000 cm = keliling roda . 1000
Keliling roda = 157000 cm / 1000
= 157 cm

Keliling = phi . d
157cm = (3,14) . d
d = 157 cm / 3,14
d = 50 cm