TOLONG JAWAB NO. 4 PLISS

a.30×2=60cm
b.k=π×D=3,14×60=188,4cm
c.30cm×100=3000 cm(3km)


#semoga membantu

a. diameter ban mobil
diameter =2×r = 2×30=60cm
b. keliling
=2¶r = 2×3,14×30 = 188,4cm
c. jarak yg ditempuh mobil
= 188,4cm×100
=18840cm
semoga benar, maaf jika salah