Question

Kecepatan 2,198 km/jam. selama 30 menit berputar 250 kali.jari jari...cm

Answer 1

30 menit = 0,5jam
V = S / T
S (jarak) = V x T
S = 2,198 x 0,5
S =1,099 km = 109.900cm

keliling = 109.900cm / 250 = 439,6cm

2 π r = keliling
2 x 3,14 x r = 439,6cm
6,28 x r = 439,6cm
r = 439,6 / 6,28
r = 70cm

Answer 2

30 menit = 0,5 jam

j = k x w
  = 2,198 x 0,5
  = 1,099 km
  = 109.900 cm

k = 109.900 / 250
   = 439,6 cm

r = k : 2 : π
  = 439,6 : 2 : 3,14
  = 70 cm

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