5 корень 27/ корень 12

V 27 = V ( 9 * 3 ) = 3 V 3 5 V 27 = 15 V 3 V 12 = V ( 4 * 3 ) = 2 V 3 ---------------------------( 15 V 3 ) / ( 2 V 3 ) = 15/2 = 7,5