December 2018 1 51 Report
19. jika pipa yg masing masing berdiameter 21cm diikat erat jadi satu. jika arah tali pengikat tegak lurus dengan arah panjang pipa maka panjang tali yg melilit pipa tersebut .... cm
a. 129 c. 134
b. 131 d. 141

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