=0.74-0.37 ( 1 -1 )\r=2* -1\r8\r= 1\r26-1 4\r5 1 1 6 " 1 3 6.\r3 :37.4 + 1 - 15%\r=37.4-5-85%\r=445\r27-1@6 78 9 : #445;\rîp ï ð # P" 2 #$" 7 %\r3:<=\r?>??@.\r3 : (10+20) xlOx 1 -3.14xl(px 1 =71.5 ( cm2)\r29-K 2 4\rñp ò K # P" 28 % P" 4 #$" 2 2 %\r3 7(80-60) +60x100%=33.3%\r20%<33.3%<50%\r30-k B 7%CD=EFGHI.\rJ :K L M :7.14X52X2+=.14X5X2M1=\r=157+4082\r= 5652 (cm2 )\r3 1 3 S M 73.14x52xQ = lC20.5 (dm3)\r1 x 3.14x82x15\r3\r= 1 *314x64x15\r31-2. =1004.8 (cm3)\r5 1 2 6 " 1 3 6.\r3 7Tf l E > 5 YZ[\2] ,_`Zabc?de 4F fghBBj??fk?k.\r33-1,m 716x14=224?bpqr\r33-2.3 715,15:225 ?bp0r\r5 1 3 6 " 1 3 6
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