Question

Aflati suma lungimilor tuturor munchiilor unui cuboid cu dimensiunea de : a) 3cm,4cm,5cm .b)4cm,6cm si 11cm

Answer 1

$a) \ a=3 \ cm \\ b=4 \ cm \\ c=5 \ cm \\ 4a+4b+4c=(4*3)+(4*4)+(4*5)= \\ =12+16+20=\boxed{ 48 \ cm}. \\ b) \ a=4 \ cm \\ b=6 \ cm \\c=11 \ cm \\ 4a+4b+4c =(4*4)+(4*6)+(4*11)= \\ =16+24+44=\boxed{84}.$