1.r = 25 cm.
1000k.
k = 2πr
k = 50 . 3,14
1000k = 1000 x 3,14 x 50
1000k = 31400 x 5
1000k = 157000 cm
1000k = 1,57 km.
2.
x = putaran x
d = 50
kx = 1570 x 100
kx = 157000
3,14 x 50x = 157000
x = 157000/157
x = 1000.
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Verified answer
1.r = 25 cm.
1000k.
k = 2πr
k = 50 . 3,14
1000k = 1000 x 3,14 x 50
1000k = 31400 x 5
1000k = 157000 cm
1000k = 1,57 km.
2.
x = putaran x
d = 50
kx = 1570 x 100
kx = 157000
3,14 x 50x = 157000
x = 157000/157
x = 1000.