Jika roda berputar sebanyak 1000 kali.jika panjang lintasan 1320 m. Tentukan diameter roda?

Panjang lintasan = 1000 x keliling roda
Panjang lintasan = 1000 x pi x d
1320 m = 1000 x 22/7 x d
1320 m = 22000/7 x d
132000 cm = 22000/7 x d
7 x 132000 cm = 22000 x d
924000 cm = 22000 x d
d = 924000 cm / 22000
d = 42 cm