berapakah panjang lintasan jika bola berputar sebanyak 100x dengan jari jari 70cm?

keliling = 2 π r
            = 2 x 22/7 x 70
            = 440 cm

panjang lintasan = keliling x putaran
                           = 440 x 100
                           = 44.000 cm
                           = 440 m

kll lingkaran = 2πr
= 2 x 22/7 x 70
= 44 x 10
= 440 cm

sebanyak 100x = 100 x 440 = 44.000 cm