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2014-04-15T21:19:32+07:00
52,8÷40=1,32 m=132 cm """kel.lingkaran =phi.d jadi 132÷3.14=42,04 cm= 0,42 m """ jari2 = 0,42÷2=0,21
2014-04-15T21:19:45+07:00
52,8m :40 = 1,32 m =132 cm :)
K = 2 phi r
132 = 2 x 22/7 x r
132 = 44/7 x r
132 x 7/44 = r
3x7 = r
21 cm = r
dijadiin meter lagi = 0,21 m

GB :D