Jawabanmu

2014-04-13T12:01:33+07:00
2000 itu maksudnya 2000 kali keliling roda

2000 Kel = 5204 m
K = 2,602 m

K = pi x d
2,602 = 3,14 x d
d =  \frac{1301}{1570}

d = 2r
 \frac{1301}{1570} = 2r
r =  \frac{1301}{3140}

L = pi x r^2
L = 3,14 x  \frac{1301}{3140}^{2}
L = 0,539 m
Tapi,disini gk ada jawabannya
adanya berapa aja?
a.314 cm^2
1256.5024,20.096 adanya ini aja