Pak madi mendorong gerobak esnya dengan kecepatan 2,198 km/jam. jika selama 30 menit roda gerobak berputar 250 kali. tentukan panjang jari - jari roda gerobak!
Tolong Yah Pake cara
Zuhh
Dik : v = 2.198 km/jm t = 30 menit = 0,5 jm bnyk putran = 250 kali
mka : s = v x t = 2.198 x 0,5 = 1.099 km = 1.099.000 m
K roda = 1.099.000/250 = 4.396 m
jdi : K = 2 x 3,14 x r 4.396 = 6,28 x r r = 4.396/6,28 r = 700 m
v = 2.198 km/jm
t = 30 menit = 0,5 jm
bnyk putran = 250 kali
mka :
s = v x t
= 2.198 x 0,5
= 1.099 km = 1.099.000 m
K roda = 1.099.000/250 = 4.396 m
jdi :
K = 2 x 3,14 x r
4.396 = 6,28 x r
r = 4.396/6,28
r = 700 m