September 2018 1 63 Report
Roda pedati berdiameter 86cm berputar sebanyak 680 kali utk tiba di suatu tempat. berapa selisih putaran jika digunakan roda kecil dgn diameter 20cm?
a. 2444 putaran
b. 2924
c.2424
d. 2144
e.2244

pake cara yaa,please thanx
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