Jawabanmu

2014-09-08T15:44:53+07:00
1. L = 4 (x) 3,14 (x) r^2
   200,96 = 4 (x) 3,14 (x) r^2
   200,96 : 12,56 = r^2
   16 = r^2
   4 = r

2. 452,16 = 4 (x) 3,14 (x) r^2
    452,16 : 12,56 = r^2
    36 = r^2
    6 = r

3. 1.256 = 4 (x) 3,14 (x) r^2
    1.256 : 12,56 = r^2
    100 = r^2
     10 = r

4. 5.024 = 4 (x) 3.14 (x) r^2
    5.024 : 12,56 = r^2
    400 = r^2
    20 = r
3 5 3
mba diameter bukan jari2
ohiya yak... yaudah kali 2 aja:D