Х = 0.2P Y = 1.5 ( cm ) P = 2 * ( X + Y ) P = 2 * ( 0.2P + 1.5) P = 0.4P + 1.5 0.6P = 1.5 P = 2.5 ( cm ) ===================== X = 0.2 * 2.5 = 0.5 ( cm ) Y = 1.5 ===================== S = 0.5 x 1.5 = 0.25 (cm ^2 )
<span>1) 7/32 и 8/31 ; 7/32< 8/32<8/31.<span><span>732=0,21875 и 831=0,2580 8/32=0,25 </span>0,21875<0,25<0,2580 или 7/31=0,2258 Ответ:8/32или<span>7/31</span></span></span>