r\ :8x5-[(8+2)x(5+2)]+2\r=40-4*2.5+2\r=40-5\r= 3 5 5 2 )\r27-1:^ *_`a3b c I I d.\rEF1DG40\r28-1: EF2DG900\rf :300+300 = 1 (S 5 K )\rghij@klmn60°copqr1sdt,u p *\r9: ;<=.> (?7 @A? 35B)\r\ : 42+(32+2.8)\r=42+6\r29-1:=7(vw)^*\rxy7vwz{|}.\r96+2+4=12(\r)\r3 0 -1 ,^ *~MMy12\rv0\r31-1:* * : (1 0 0.13)x(1 + 0.13)*3.14x5 - 1 x1 x3 .1 4 x5 =4 3 5 (^ ^)\r\ *
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/Mxx , x+95=475\rx+95 - 95=475 - 95\rx=380\r34-1:^ */Mx\r\ *
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