0%=18\r9 6x=180.4\rx=72+6\r27-3? x=L2\r _ io 2 10\r9 :3x32+22=768?@A\r28T?B CDE018FGHIJ7683P@A.\r9 :3*12x19x4=273.6 ?@A\r28-2?3 K @ A\r29-1\rK : LMNAOPOQRSTUVWXP0YZ[\@]^90_ *$`ab c\ndeMNB ;\rLMNBfghPVWi?j5k ,$`lmnopqrc\nde?jsMNC @\r 25 5 25\r9 120* 1- 1 - 1 \r3 2\r=120x 1\r6\r=20 tu\r30-1?B vwx2yuz{|\r 1 1 1 2 .\r} ~J
.\r90%x-80%x=320\rO.lx=32O\rx=3200\r31-1?B J320\r3 2 -1 ,9 ?2 ? 3 :4\nd.\r9 :70-2.5 = 67.5 67.5+15 = 4.5 \r3 3 -1 ,B tu?4.5.\rII? ? 3.14x 4+2 2x 6+10 - 8 \r= 3.14x4x8\r= 3.14x32\r= 100.48 A \r100.48@11A = 100.48\r34-1?B IJ100.48 .\r 1 2 1 2